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Finding the Fourth Proportional to 324,209.97, 485,318.46 and 276,380.28

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Solution

The fourth proportional to 324,209.97, 485,318.46 and 276,380.28 is: 413,720.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,209.97 : 485,318.46 = 276,380.28 : x
  2. Step 2: Convert to fraction form
    324,209.97/485,318.46 = 276,380.28/x
  3. Step 3: Cross multiply
    324,209.97x = 485,318.46 × 276,380.28
  4. Step 4: Simplify right side
    324,209.97x = 134,132,451,863.97
  5. Step 5: Solve for x
    x = 134,132,451,863.97/324,209.97
  6. Step 6: Final answer
    x = 413,720.93

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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.