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Finding the Fourth Proportional to 220,711.68, 330,953.28 and 108,341.76

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Solution

The fourth proportional to 220,711.68, 330,953.28 and 108,341.76 is: 162,456.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,711.68 : 330,953.28 = 108,341.76 : x
  2. Step 2: Convert to fraction form
    220,711.68/330,953.28 = 108,341.76/x
  3. Step 3: Cross multiply
    220,711.68x = 330,953.28 × 108,341.76
  4. Step 4: Simplify right side
    220,711.68x = 35,856,060,832.97
  5. Step 5: Solve for x
    x = 35,856,060,832.97/220,711.68
  6. Step 6: Final answer
    x = 162,456.56

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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.