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Finding the Fourth Proportional to 218,672.80, 327,964.40 and 60,861.60

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Solution

The fourth proportional to 218,672.80, 327,964.40 and 60,861.60 is: 91,279.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,672.80 : 327,964.40 = 60,861.60 : x
  2. Step 2: Convert to fraction form
    218,672.80/327,964.40 = 60,861.60/x
  3. Step 3: Cross multiply
    218,672.80x = 327,964.40 × 60,861.60
  4. Step 4: Simplify right side
    218,672.80x = 19,960,438,127.04
  5. Step 5: Solve for x
    x = 19,960,438,127.04/218,672.80
  6. Step 6: Final answer
    x = 91,279.93

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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.