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Finding the Fourth Proportional to 272,627.90, 408,910.55 and 72,963.86

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Solution

The fourth proportional to 272,627.90, 408,910.55 and 72,963.86 is: 109,437.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,627.90 : 408,910.55 = 72,963.86 : x
  2. Step 2: Convert to fraction form
    272,627.90/408,910.55 = 72,963.86/x
  3. Step 3: Cross multiply
    272,627.90x = 408,910.55 × 72,963.86
  4. Step 4: Simplify right side
    272,627.90x = 29,835,693,327.41
  5. Step 5: Solve for x
    x = 29,835,693,327.41/272,627.90
  6. Step 6: Final answer
    x = 109,437.42

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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.