Finding the Fourth Proportional to 207,689.34, 311,081.49 and 136,531.62
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Solution
The fourth proportional to 207,689.34, 311,081.49 and 136,531.62 is: 204,499.95
Step by Step Solution
- Step 1: Write the proportion equation
207,689.34 : 311,081.49 = 136,531.62 : x - Step 2: Convert to fraction form
207,689.34/311,081.49 = 136,531.62/x - Step 3: Cross multiply
207,689.34x = 311,081.49 × 136,531.62 - Step 4: Simplify right side
207,689.34x = 42,472,459,781.71 - Step 5: Solve for x
x = 42,472,459,781.71/207,689.34 - Step 6: Final answer
x = 204,499.95
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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.