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Finding the Fourth Proportional to 269,561.20, 404,268.90 and 80,021.20

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Solution

The fourth proportional to 269,561.20, 404,268.90 and 80,021.20 is: 120,010.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,561.20 : 404,268.90 = 80,021.20 : x
  2. Step 2: Convert to fraction form
    269,561.20/404,268.90 = 80,021.20/x
  3. Step 3: Cross multiply
    269,561.20x = 404,268.90 × 80,021.20
  4. Step 4: Simplify right side
    269,561.20x = 32,350,082,500.68
  5. Step 5: Solve for x
    x = 32,350,082,500.68/269,561.20
  6. Step 6: Final answer
    x = 120,010.16

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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.