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Finding the Fourth Proportional to 274,645.20, 379,046.88 and 153,793.20

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Solution

The fourth proportional to 274,645.20, 379,046.88 and 153,793.20 is: 212,255.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,645.20 : 379,046.88 = 153,793.20 : x
  2. Step 2: Convert to fraction form
    274,645.20/379,046.88 = 153,793.20/x
  3. Step 3: Cross multiply
    274,645.20x = 379,046.88 × 153,793.20
  4. Step 4: Simplify right side
    274,645.20x = 58,294,832,625.22
  5. Step 5: Solve for x
    x = 58,294,832,625.22/274,645.20
  6. Step 6: Final answer
    x = 212,255.06

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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.