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Finding the Fourth Proportional to 398,808.56, 597,988.54 and 132,426.52

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Solution

The fourth proportional to 398,808.56, 597,988.54 and 132,426.52 is: 198,565.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,808.56 : 597,988.54 = 132,426.52 : x
  2. Step 2: Convert to fraction form
    398,808.56/597,988.54 = 132,426.52/x
  3. Step 3: Cross multiply
    398,808.56x = 597,988.54 × 132,426.52
  4. Step 4: Simplify right side
    398,808.56x = 79,189,541,352.08
  5. Step 5: Solve for x
    x = 79,189,541,352.08/398,808.56
  6. Step 6: Final answer
    x = 198,565.30

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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.