Home / 231,341.18-319,248.63-129,365.47

Finding the Fourth Proportional to 231,341.18, 319,248.63 and 129,365.47

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Solution

The fourth proportional to 231,341.18, 319,248.63 and 129,365.47 is: 178,523.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,341.18 : 319,248.63 = 129,365.47 : x
  2. Step 2: Convert to fraction form
    231,341.18/319,248.63 = 129,365.47/x
  3. Step 3: Cross multiply
    231,341.18x = 319,248.63 × 129,365.47
  4. Step 4: Simplify right side
    231,341.18x = 41,299,747,470.56
  5. Step 5: Solve for x
    x = 41,299,747,470.56/231,341.18
  6. Step 6: Final answer
    x = 178,523.12

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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.