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Finding the Fourth Proportional to 218,123.76, 327,360.60 and 112,972.80

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Solution

The fourth proportional to 218,123.76, 327,360.60 and 112,972.80 is: 169,549.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,123.76 : 327,360.60 = 112,972.80 : x
  2. Step 2: Convert to fraction form
    218,123.76/327,360.60 = 112,972.80/x
  3. Step 3: Cross multiply
    218,123.76x = 327,360.60 × 112,972.80
  4. Step 4: Simplify right side
    218,123.76x = 36,982,843,591.68
  5. Step 5: Solve for x
    x = 36,982,843,591.68/218,123.76
  6. Step 6: Final answer
    x = 169,549.82

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1.5x scale

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.