Guiding and encouraging the future development of the Borough in accordance with comprehensive planning land use and population density that represents the most beneficial and convenient relationships among the residential, commercial, industrial, institutional and recreational areas within the Borough, having regard to their suitability for the various uses appropriate to each of them and their potentiality for such uses, as indicated by topography and soil conditions, existing man-made conditions, and trends in population, in the direction and manner of the use of the land, in building development, and in economic activity, considering such conditions and trends both within the Borough and with respect to the relation of the Borough to surrounding areas;