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Finding the Fourth Proportional to 272,348.91, 408,522.72 and 129,761.37

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Solution

The fourth proportional to 272,348.91, 408,522.72 and 129,761.37 is: 194,641.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,348.91 : 408,522.72 = 129,761.37 : x
  2. Step 2: Convert to fraction form
    272,348.91/408,522.72 = 129,761.37/x
  3. Step 3: Cross multiply
    272,348.91x = 408,522.72 × 129,761.37
  4. Step 4: Simplify right side
    272,348.91x = 53,010,467,823.33
  5. Step 5: Solve for x
    x = 53,010,467,823.33/272,348.91
  6. Step 6: Final answer
    x = 194,641.75

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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.