Finding the Fourth Proportional to 386,954.76, 534,006.90 and 217,204.68
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Solution
The fourth proportional to 386,954.76, 534,006.90 and 217,204.68 is: 299,747.70
Step by Step Solution
- Step 1: Write the proportion equation
386,954.76 : 534,006.90 = 217,204.68 : x - Step 2: Convert to fraction form
386,954.76/534,006.90 = 217,204.68/x - Step 3: Cross multiply
386,954.76x = 534,006.90 × 217,204.68 - Step 4: Simplify right side
386,954.76x = 115,988,797,832.29 - Step 5: Solve for x
x = 115,988,797,832.29/386,954.76 - Step 6: Final answer
x = 299,747.70
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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.