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Finding the Fourth Proportional to 269,738.80, 404,662.20 and 80,198.80

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Solution

The fourth proportional to 269,738.80, 404,662.20 and 80,198.80 is: 120,314.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,738.80 : 404,662.20 = 80,198.80 : x
  2. Step 2: Convert to fraction form
    269,738.80/404,662.20 = 80,198.80/x
  3. Step 3: Cross multiply
    269,738.80x = 404,662.20 × 80,198.80
  4. Step 4: Simplify right side
    269,738.80x = 32,453,422,845.36
  5. Step 5: Solve for x
    x = 32,453,422,845.36/269,738.80
  6. Step 6: Final answer
    x = 120,314.26

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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.