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Finding the Fourth Proportional to 382,635.30, 574,013.70 and 129,939.60

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Solution

The fourth proportional to 382,635.30, 574,013.70 and 129,939.60 is: 194,930.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,635.30 : 574,013.70 = 129,939.60 : x
  2. Step 2: Convert to fraction form
    382,635.30/574,013.70 = 129,939.60/x
  3. Step 3: Cross multiply
    382,635.30x = 574,013.70 × 129,939.60
  4. Step 4: Simplify right side
    382,635.30x = 74,587,110,572.52
  5. Step 5: Solve for x
    x = 74,587,110,572.52/382,635.30
  6. Step 6: Final answer
    x = 194,930.03

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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.