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Finding the Fourth Proportional to 234,469.78, 351,632.84 and 84,691.60

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Solution

The fourth proportional to 234,469.78, 351,632.84 and 84,691.60 is: 127,011.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,469.78 : 351,632.84 = 84,691.60 : x
  2. Step 2: Convert to fraction form
    234,469.78/351,632.84 = 84,691.60/x
  3. Step 3: Cross multiply
    234,469.78x = 351,632.84 × 84,691.60
  4. Step 4: Simplify right side
    234,469.78x = 29,780,347,832.14
  5. Step 5: Solve for x
    x = 29,780,347,832.14/234,469.78
  6. Step 6: Final answer
    x = 127,011.45

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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.