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Finding the Fourth Proportional to 485,004.92, 669,306.92 and 281,174.00

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Solution

The fourth proportional to 485,004.92, 669,306.92 and 281,174.00 is: 388,020.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,004.92 : 669,306.92 = 281,174.00 : x
  2. Step 2: Convert to fraction form
    485,004.92/669,306.92 = 281,174.00/x
  3. Step 3: Cross multiply
    485,004.92x = 669,306.92 × 281,174.00
  4. Step 4: Simplify right side
    485,004.92x = 188,191,699,171.68
  5. Step 5: Solve for x
    x = 188,191,699,171.68/485,004.92
  6. Step 6: Final answer
    x = 388,020.19

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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.