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Finding the Fourth Proportional to 225,712.62, 338,470.49 and 85,372.83

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Solution

The fourth proportional to 225,712.62, 338,470.49 and 85,372.83 is: 128,022.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,712.62 : 338,470.49 = 85,372.83 : x
  2. Step 2: Convert to fraction form
    225,712.62/338,470.49 = 85,372.83/x
  3. Step 3: Cross multiply
    225,712.62x = 338,470.49 × 85,372.83
  4. Step 4: Simplify right side
    225,712.62x = 28,896,181,483.57
  5. Step 5: Solve for x
    x = 28,896,181,483.57/225,712.62
  6. Step 6: Final answer
    x = 128,022.00

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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.