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Finding the Fourth Proportional to 218,200.80, 327,290.40 and 68,455.56

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Solution

The fourth proportional to 218,200.80, 327,290.40 and 68,455.56 is: 102,679.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,200.80 : 327,290.40 = 68,455.56 : x
  2. Step 2: Convert to fraction form
    218,200.80/327,290.40 = 68,455.56/x
  3. Step 3: Cross multiply
    218,200.80x = 327,290.40 × 68,455.56
  4. Step 4: Simplify right side
    218,200.80x = 22,404,847,614.62
  5. Step 5: Solve for x
    x = 22,404,847,614.62/218,200.80
  6. Step 6: Final answer
    x = 102,679.95

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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.