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Finding the Fourth Proportional to 226,009.67, 338,883.24 and 85,691.75

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Solution

The fourth proportional to 226,009.67, 338,883.24 and 85,691.75 is: 128,487.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,009.67 : 338,883.24 = 85,691.75 : x
  2. Step 2: Convert to fraction form
    226,009.67/338,883.24 = 85,691.75/x
  3. Step 3: Cross multiply
    226,009.67x = 338,883.24 × 85,691.75
  4. Step 4: Simplify right side
    226,009.67x = 29,039,497,881.27
  5. Step 5: Solve for x
    x = 29,039,497,881.27/226,009.67
  6. Step 6: Final answer
    x = 128,487.86

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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.