Finding the Fourth Proportional to 287,126.66, 430,689.99 and 76,759.13
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Solution
The fourth proportional to 287,126.66, 430,689.99 and 76,759.13 is: 115,138.69
Step by Step Solution
- Step 1: Write the proportion equation
287,126.66 : 430,689.99 = 76,759.13 : x - Step 2: Convert to fraction form
287,126.66/430,689.99 = 76,759.13/x - Step 3: Cross multiply
287,126.66x = 430,689.99 × 76,759.13 - Step 4: Simplify right side
287,126.66x = 33,059,386,778.66 - Step 5: Solve for x
x = 33,059,386,778.66/287,126.66 - Step 6: Final answer
x = 115,138.69
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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.