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Finding the Fourth Proportional to 363,991.20, 545,988.10 and 111,270.68

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Solution

The fourth proportional to 363,991.20, 545,988.10 and 111,270.68 is: 166,906.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,991.20 : 545,988.10 = 111,270.68 : x
  2. Step 2: Convert to fraction form
    363,991.20/545,988.10 = 111,270.68/x
  3. Step 3: Cross multiply
    363,991.20x = 545,988.10 × 111,270.68
  4. Step 4: Simplify right side
    363,991.20x = 60,752,467,158.91
  5. Step 5: Solve for x
    x = 60,752,467,158.91/363,991.20
  6. Step 6: Final answer
    x = 166,906.42

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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.