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Finding the Fourth Proportional to 418,622.20, 628,079.10 and 182,134.60

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Solution

The fourth proportional to 418,622.20, 628,079.10 and 182,134.60 is: 273,265.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,622.20 : 628,079.10 = 182,134.60 : x
  2. Step 2: Convert to fraction form
    418,622.20/628,079.10 = 182,134.60/x
  3. Step 3: Cross multiply
    418,622.20x = 628,079.10 × 182,134.60
  4. Step 4: Simplify right side
    418,622.20x = 114,394,935,646.86
  5. Step 5: Solve for x
    x = 114,394,935,646.86/418,622.20
  6. Step 6: Final answer
    x = 273,265.33

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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.