Home / 262,720.38-394,135.98-85,213.61

Finding the Fourth Proportional to 262,720.38, 394,135.98 and 85,213.61

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Solution

The fourth proportional to 262,720.38, 394,135.98 and 85,213.61 is: 127,838.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,720.38 : 394,135.98 = 85,213.61 : x
  2. Step 2: Convert to fraction form
    262,720.38/394,135.98 = 85,213.61/x
  3. Step 3: Cross multiply
    262,720.38x = 394,135.98 × 85,213.61
  4. Step 4: Simplify right side
    262,720.38x = 33,585,749,686.69
  5. Step 5: Solve for x
    x = 33,585,749,686.69/262,720.38
  6. Step 6: Final answer
    x = 127,838.39

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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.