Home / 231,445.98-319,380.36-129,453.74

Finding the Fourth Proportional to 231,445.98, 319,380.36 and 129,453.74

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Solution

The fourth proportional to 231,445.98, 319,380.36 and 129,453.74 is: 178,637.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,445.98 : 319,380.36 = 129,453.74 : x
  2. Step 2: Convert to fraction form
    231,445.98/319,380.36 = 129,453.74/x
  3. Step 3: Cross multiply
    231,445.98x = 319,380.36 × 129,453.74
  4. Step 4: Simplify right side
    231,445.98x = 41,344,982,084.55
  5. Step 5: Solve for x
    x = 41,344,982,084.55/231,445.98
  6. Step 6: Final answer
    x = 178,637.72

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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.