Finding the Fourth Proportional to 259,852,535.69, 389,651,257.13 and 128,543,097.11
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Solution
The fourth proportional to 259,852,535.69, 389,651,257.13 and 128,543,097.11 is: 192,751,551.37
Step by Step Solution
- Step 1: Write the proportion equation
259,852,535.69 : 389,651,257.13 = 128,543,097.11 : x - Step 2: Convert to fraction form
259,852,535.69/389,651,257.13 = 128,543,097.11/x - Step 3: Cross multiply
259,852,535.69x = 389,651,257.13 × 128,543,097.11 - Step 4: Simplify right side
259,852,535.69x = 50,086,979,381,704,200 - Step 5: Solve for x
x = 50,086,979,381,704,200/259,852,535.69 - Step 6: Final answer
x = 192,751,551.37
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.