Home / 231,428.62-319,356.46-129,436.42

Finding the Fourth Proportional to 231,428.62, 319,356.46 and 129,436.42

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Solution

The fourth proportional to 231,428.62, 319,356.46 and 129,436.42 is: 178,613.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,428.62 : 319,356.46 = 129,436.42 : x
  2. Step 2: Convert to fraction form
    231,428.62/319,356.46 = 129,436.42/x
  3. Step 3: Cross multiply
    231,428.62x = 319,356.46 × 129,436.42
  4. Step 4: Simplify right side
    231,428.62x = 41,336,356,886.27
  5. Step 5: Solve for x
    x = 41,336,356,886.27/231,428.62
  6. Step 6: Final answer
    x = 178,613.85

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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.