Home / 231,575.77-319,580.28-129,600.43

Finding the Fourth Proportional to 231,575.77, 319,580.28 and 129,600.43

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Solution

The fourth proportional to 231,575.77, 319,580.28 and 129,600.43 is: 178,851.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,575.77 : 319,580.28 = 129,600.43 : x
  2. Step 2: Convert to fraction form
    231,575.77/319,580.28 = 129,600.43/x
  3. Step 3: Cross multiply
    231,575.77x = 319,580.28 × 129,600.43
  4. Step 4: Simplify right side
    231,575.77x = 41,417,741,707.52
  5. Step 5: Solve for x
    x = 41,417,741,707.52/231,575.77
  6. Step 6: Final answer
    x = 178,851.79

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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.