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Finding the Fourth Proportional to 392,675.65, 541,877.97 and 239,969.39

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Solution

The fourth proportional to 392,675.65, 541,877.97 and 239,969.39 is: 331,148.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,675.65 : 541,877.97 = 239,969.39 : x
  2. Step 2: Convert to fraction form
    392,675.65/541,877.97 = 239,969.39/x
  3. Step 3: Cross multiply
    392,675.65x = 541,877.97 × 239,969.39
  4. Step 4: Simplify right side
    392,675.65x = 130,034,125,915.34
  5. Step 5: Solve for x
    x = 130,034,125,915.34/392,675.65
  6. Step 6: Final answer
    x = 331,148.95

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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.