Home / 231,353.75-319,265.96-129,378.06

Finding the Fourth Proportional to 231,353.75, 319,265.96 and 129,378.06

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Solution

The fourth proportional to 231,353.75, 319,265.96 and 129,378.06 is: 178,540.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,353.75 : 319,265.96 = 129,378.06 : x
  2. Step 2: Convert to fraction form
    231,353.75/319,265.96 = 129,378.06/x
  3. Step 3: Cross multiply
    231,353.75x = 319,265.96 × 129,378.06
  4. Step 4: Simplify right side
    231,353.75x = 41,306,009,881.95
  5. Step 5: Solve for x
    x = 41,306,009,881.95/231,353.75
  6. Step 6: Final answer
    x = 178,540.48

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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.