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Finding the Fourth Proportional to 361,074.80, 498,128.84 and 217,753.36

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Solution

The fourth proportional to 361,074.80, 498,128.84 and 217,753.36 is: 300,406.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,074.80 : 498,128.84 = 217,753.36 : x
  2. Step 2: Convert to fraction form
    361,074.80/498,128.84 = 217,753.36/x
  3. Step 3: Cross multiply
    361,074.80x = 498,128.84 × 217,753.36
  4. Step 4: Simplify right side
    361,074.80x = 108,469,228,622.90
  5. Step 5: Solve for x
    x = 108,469,228,622.90/361,074.80
  6. Step 6: Final answer
    x = 300,406.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.