Home / 263,208.20-394,839.96-85,729.04

Finding the Fourth Proportional to 263,208.20, 394,839.96 and 85,729.04

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Solution

The fourth proportional to 263,208.20, 394,839.96 and 85,729.04 is: 128,602.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,208.20 : 394,839.96 = 85,729.04 : x
  2. Step 2: Convert to fraction form
    263,208.20/394,839.96 = 85,729.04/x
  3. Step 3: Cross multiply
    263,208.20x = 394,839.96 × 85,729.04
  4. Step 4: Simplify right side
    263,208.20x = 33,849,248,750.24
  5. Step 5: Solve for x
    x = 33,849,248,750.24/263,208.20
  6. Step 6: Final answer
    x = 128,602.56

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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.