Finding the Fourth Proportional to 386,891.17, 533,959.07 and 217,125.29
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Solution
The fourth proportional to 386,891.17, 533,959.07 and 217,125.29 is: 299,660.55
Step by Step Solution
- Step 1: Write the proportion equation
386,891.17 : 533,959.07 = 217,125.29 : x - Step 2: Convert to fraction form
386,891.17/533,959.07 = 217,125.29/x - Step 3: Cross multiply
386,891.17x = 533,959.07 × 217,125.29 - Step 4: Simplify right side
386,891.17x = 115,936,018,171.15 - Step 5: Solve for x
x = 115,936,018,171.15/386,891.17 - Step 6: Final answer
x = 299,660.55
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1.5x scale
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.