Final answer:
The mass ratio of the tree in Oakland to the tree in Mapleville cannot be determined with the information given.
Step-by-step explanation:
To compare the mass of the tree in Oakland to the mass of the tree in Mapleville, we need more information or context. The question does not provide the masses of the trees in either location, so it is not possible to determine the exact ratio. Therefore, the answer to the question cannot be determined based on the information given.