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Finding the Fourth Proportional to 266,082.40, 398,540.40 and 231,090.40

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Solution

The fourth proportional to 266,082.40, 398,540.40 and 231,090.40 is: 346,129.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,082.40 : 398,540.40 = 231,090.40 : x
  2. Step 2: Convert to fraction form
    266,082.40/398,540.40 = 231,090.40/x
  3. Step 3: Cross multiply
    266,082.40x = 398,540.40 × 231,090.40
  4. Step 4: Simplify right side
    266,082.40x = 92,098,860,452.16
  5. Step 5: Solve for x
    x = 92,098,860,452.16/266,082.40
  6. Step 6: Final answer
    x = 346,129.10

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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.