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Finding the Fourth Proportional to 319,818.38, 479,729.39 and 132,829.88

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Solution

The fourth proportional to 319,818.38, 479,729.39 and 132,829.88 is: 199,245.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,818.38 : 479,729.39 = 132,829.88 : x
  2. Step 2: Convert to fraction form
    319,818.38/479,729.39 = 132,829.88/x
  3. Step 3: Cross multiply
    319,818.38x = 479,729.39 × 132,829.88
  4. Step 4: Simplify right side
    319,818.38x = 63,722,394,243.38
  5. Step 5: Solve for x
    x = 63,722,394,243.38/319,818.38
  6. Step 6: Final answer
    x = 199,245.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.