Finding the Fourth Proportional to 386,892.87, 533,033.91 and 299,377.08
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Solution
The fourth proportional to 386,892.87, 533,033.91 and 299,377.08 is: 412,460.78
Step by Step Solution
- Step 1: Write the proportion equation
386,892.87 : 533,033.91 = 299,377.08 : x - Step 2: Convert to fraction form
386,892.87/533,033.91 = 299,377.08/x - Step 3: Cross multiply
386,892.87x = 533,033.91 × 299,377.08 - Step 4: Simplify right side
386,892.87x = 159,578,135,516.78 - Step 5: Solve for x
x = 159,578,135,516.78/386,892.87 - Step 6: Final answer
x = 412,460.78
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.