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Finding the Fourth Proportional to 226,563.20, 339,758.40 and 68,739.20

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Solution

The fourth proportional to 226,563.20, 339,758.40 and 68,739.20 is: 103,082.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,563.20 : 339,758.40 = 68,739.20 : x
  2. Step 2: Convert to fraction form
    226,563.20/339,758.40 = 68,739.20/x
  3. Step 3: Cross multiply
    226,563.20x = 339,758.40 × 68,739.20
  4. Step 4: Simplify right side
    226,563.20x = 23,354,720,609.28
  5. Step 5: Solve for x
    x = 23,354,720,609.28/226,563.20
  6. Step 6: Final answer
    x = 103,082.59

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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.