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Finding the Fourth Proportional to 300,939.91, 451,556.72 and 132,439.00

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Solution

The fourth proportional to 300,939.91, 451,556.72 and 132,439.00 is: 198,723.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,939.91 : 451,556.72 = 132,439.00 : x
  2. Step 2: Convert to fraction form
    300,939.91/451,556.72 = 132,439.00/x
  3. Step 3: Cross multiply
    300,939.91x = 451,556.72 × 132,439.00
  4. Step 4: Simplify right side
    300,939.91x = 59,803,720,737.28
  5. Step 5: Solve for x
    x = 59,803,720,737.28/300,939.91
  6. Step 6: Final answer
    x = 198,723.13

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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.