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Finding the Fourth Proportional to 398,375.35, 597,500.98 and 218,549.27

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Solution

The fourth proportional to 398,375.35, 597,500.98 and 218,549.27 is: 327,789.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,375.35 : 597,500.98 = 218,549.27 : x
  2. Step 2: Convert to fraction form
    398,375.35/597,500.98 = 218,549.27/x
  3. Step 3: Cross multiply
    398,375.35x = 597,500.98 × 218,549.27
  4. Step 4: Simplify right side
    398,375.35x = 130,583,403,950.66
  5. Step 5: Solve for x
    x = 130,583,403,950.66/398,375.35
  6. Step 6: Final answer
    x = 327,789.87

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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.