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Finding the Fourth Proportional to 220,387.88, 330,471.66 and 101,957.78

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Solution

The fourth proportional to 220,387.88, 330,471.66 and 101,957.78 is: 152,885.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,387.88 : 330,471.66 = 101,957.78 : x
  2. Step 2: Convert to fraction form
    220,387.88/330,471.66 = 101,957.78/x
  3. Step 3: Cross multiply
    220,387.88x = 330,471.66 × 101,957.78
  4. Step 4: Simplify right side
    220,387.88x = 33,694,158,015.04
  5. Step 5: Solve for x
    x = 33,694,158,015.04/220,387.88
  6. Step 6: Final answer
    x = 152,885.71

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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.