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Finding the Fourth Proportional to 231,789.96, 347,678.40 and 74,027.88

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Solution

The fourth proportional to 231,789.96, 347,678.40 and 74,027.88 is: 111,039.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,789.96 : 347,678.40 = 74,027.88 : x
  2. Step 2: Convert to fraction form
    231,789.96/347,678.40 = 74,027.88/x
  3. Step 3: Cross multiply
    231,789.96x = 347,678.40 × 74,027.88
  4. Step 4: Simplify right side
    231,789.96x = 25,737,894,873.79
  5. Step 5: Solve for x
    x = 25,737,894,873.79/231,789.96
  6. Step 6: Final answer
    x = 111,039.73

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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.