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Finding the Fourth Proportional to 217,843.34, 326,892.92 and 91,473.87

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Solution

The fourth proportional to 217,843.34, 326,892.92 and 91,473.87 is: 137,264.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,843.34 : 326,892.92 = 91,473.87 : x
  2. Step 2: Convert to fraction form
    217,843.34/326,892.92 = 91,473.87/x
  3. Step 3: Cross multiply
    217,843.34x = 326,892.92 × 91,473.87
  4. Step 4: Simplify right side
    217,843.34x = 29,902,160,010.63
  5. Step 5: Solve for x
    x = 29,902,160,010.63/217,843.34
  6. Step 6: Final answer
    x = 137,264.51

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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.