Home / 231,589.30-319,598.97-129,613.90

Finding the Fourth Proportional to 231,589.30, 319,598.97 and 129,613.90

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Solution

The fourth proportional to 231,589.30, 319,598.97 and 129,613.90 is: 178,870.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,589.30 : 319,598.97 = 129,613.90 : x
  2. Step 2: Convert to fraction form
    231,589.30/319,598.97 = 129,613.90/x
  3. Step 3: Cross multiply
    231,589.30x = 319,598.97 × 129,613.90
  4. Step 4: Simplify right side
    231,589.30x = 41,424,468,937.68
  5. Step 5: Solve for x
    x = 41,424,468,937.68/231,589.30
  6. Step 6: Final answer
    x = 178,870.39

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1.5x scale

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.