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Finding the Fourth Proportional to 400,287.87, 552,306.92 and 239,111.46

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Solution

The fourth proportional to 400,287.87, 552,306.92 and 239,111.46 is: 329,919.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,287.87 : 552,306.92 = 239,111.46 : x
  2. Step 2: Convert to fraction form
    400,287.87/552,306.92 = 239,111.46/x
  3. Step 3: Cross multiply
    400,287.87x = 552,306.92 × 239,111.46
  4. Step 4: Simplify right side
    400,287.87x = 132,062,912,813.75
  5. Step 5: Solve for x
    x = 132,062,912,813.75/400,287.87
  6. Step 6: Final answer
    x = 329,919.85

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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.