Home / 263,105.28-394,566.12-85,579.20

Finding the Fourth Proportional to 263,105.28, 394,566.12 and 85,579.20

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Solution

The fourth proportional to 263,105.28, 394,566.12 and 85,579.20 is: 128,338.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,105.28 : 394,566.12 = 85,579.20 : x
  2. Step 2: Convert to fraction form
    263,105.28/394,566.12 = 85,579.20/x
  3. Step 3: Cross multiply
    263,105.28x = 394,566.12 × 85,579.20
  4. Step 4: Simplify right side
    263,105.28x = 33,766,652,896.70
  5. Step 5: Solve for x
    x = 33,766,652,896.70/263,105.28
  6. Step 6: Final answer
    x = 128,338.94

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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.