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Finding the Fourth Proportional to 352,694.38, 529,034.28 and 86,456.29

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Solution

The fourth proportional to 352,694.38, 529,034.28 and 86,456.29 is: 129,682.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,694.38 : 529,034.28 = 86,456.29 : x
  2. Step 2: Convert to fraction form
    352,694.38/529,034.28 = 86,456.29/x
  3. Step 3: Cross multiply
    352,694.38x = 529,034.28 × 86,456.29
  4. Step 4: Simplify right side
    352,694.38x = 45,738,341,131.62
  5. Step 5: Solve for x
    x = 45,738,341,131.62/352,694.38
  6. Step 6: Final answer
    x = 129,682.65

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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.