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Finding the Fourth Proportional to 218,472.80, 327,651.60 and 68,712.80

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Solution

The fourth proportional to 218,472.80, 327,651.60 and 68,712.80 is: 103,051.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,472.80 : 327,651.60 = 68,712.80 : x
  2. Step 2: Convert to fraction form
    218,472.80/327,651.60 = 68,712.80/x
  3. Step 3: Cross multiply
    218,472.80x = 327,651.60 × 68,712.80
  4. Step 4: Simplify right side
    218,472.80x = 22,513,858,860.48
  5. Step 5: Solve for x
    x = 22,513,858,860.48/218,472.80
  6. Step 6: Final answer
    x = 103,051.08

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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.