The term 'Assess Proportionally' can be summarized as the act of prorating, which is a process of dividing or allocating something in proportion to its size or value. This term is often used in accounting and finance when dealing with taxes, payments, or other financial transactions. It is also used in other areas such as insurance, where it is used to calculate premiums or claims. In essence, prorating is a way of fairly distributing resources or costs based on their relative size or value.