Home / 231,207.28-319,061.23-129,229.90

Finding the Fourth Proportional to 231,207.28, 319,061.23 and 129,229.90

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Solution

The fourth proportional to 231,207.28, 319,061.23 and 129,229.90 is: 178,334.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,207.28 : 319,061.23 = 129,229.90 : x
  2. Step 2: Convert to fraction form
    231,207.28/319,061.23 = 129,229.90/x
  3. Step 3: Cross multiply
    231,207.28x = 319,061.23 × 129,229.90
  4. Step 4: Simplify right side
    231,207.28x = 41,232,250,846.78
  5. Step 5: Solve for x
    x = 41,232,250,846.78/231,207.28
  6. Step 6: Final answer
    x = 178,334.57

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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.