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Finding the Fourth Proportional to 220,573.80, 331,079.40 and 108,380.70

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Solution

The fourth proportional to 220,573.80, 331,079.40 and 108,380.70 is: 162,678.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,573.80 : 331,079.40 = 108,380.70 : x
  2. Step 2: Convert to fraction form
    220,573.80/331,079.40 = 108,380.70/x
  3. Step 3: Cross multiply
    220,573.80x = 331,079.40 × 108,380.70
  4. Step 4: Simplify right side
    220,573.80x = 35,882,617,127.58
  5. Step 5: Solve for x
    x = 35,882,617,127.58/220,573.80
  6. Step 6: Final answer
    x = 162,678.51

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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.