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Finding the Fourth Proportional to 217,892.48, 326,712.92 and 84,617.15

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Solution

The fourth proportional to 217,892.48, 326,712.92 and 84,617.15 is: 126,876.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,892.48 : 326,712.92 = 84,617.15 : x
  2. Step 2: Convert to fraction form
    217,892.48/326,712.92 = 84,617.15/x
  3. Step 3: Cross multiply
    217,892.48x = 326,712.92 × 84,617.15
  4. Step 4: Simplify right side
    217,892.48x = 27,645,514,101.93
  5. Step 5: Solve for x
    x = 27,645,514,101.93/217,892.48
  6. Step 6: Final answer
    x = 126,876.86

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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.