Home / 231,361.18-319,294.70-129,396.13

Finding the Fourth Proportional to 231,361.18, 319,294.70 and 129,396.13

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Solution

The fourth proportional to 231,361.18, 319,294.70 and 129,396.13 is: 178,575.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,361.18 : 319,294.70 = 129,396.13 : x
  2. Step 2: Convert to fraction form
    231,361.18/319,294.70 = 129,396.13/x
  3. Step 3: Cross multiply
    231,361.18x = 319,294.70 × 129,396.13
  4. Step 4: Simplify right side
    231,361.18x = 41,315,500,073.42
  5. Step 5: Solve for x
    x = 41,315,500,073.42/231,361.18
  6. Step 6: Final answer
    x = 178,575.76

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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.