Home / 231,351.20-319,262.85-129,376.86

Finding the Fourth Proportional to 231,351.20, 319,262.85 and 129,376.86

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Solution

The fourth proportional to 231,351.20, 319,262.85 and 129,376.86 is: 178,539.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,351.20 : 319,262.85 = 129,376.86 : x
  2. Step 2: Convert to fraction form
    231,351.20/319,262.85 = 129,376.86/x
  3. Step 3: Cross multiply
    231,351.20x = 319,262.85 × 129,376.86
  4. Step 4: Simplify right side
    231,351.20x = 41,305,223,850.42
  5. Step 5: Solve for x
    x = 41,305,223,850.42/231,351.20
  6. Step 6: Final answer
    x = 178,539.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.