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Finding the Fourth Proportional to 274,720.76, 379,123.98 and 153,867.14

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Solution

The fourth proportional to 274,720.76, 379,123.98 and 153,867.14 is: 212,341.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,720.76 : 379,123.98 = 153,867.14 : x
  2. Step 2: Convert to fraction form
    274,720.76/379,123.98 = 153,867.14/x
  3. Step 3: Cross multiply
    274,720.76x = 379,123.98 × 153,867.14
  4. Step 4: Simplify right side
    274,720.76x = 58,334,722,508.02
  5. Step 5: Solve for x
    x = 58,334,722,508.02/274,720.76
  6. Step 6: Final answer
    x = 212,341.88

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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.