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Finding the Fourth Proportional to 262,722.94, 394,084.34 and 85,229.97

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Solution

The fourth proportional to 262,722.94, 394,084.34 and 85,229.97 is: 127,844.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,722.94 : 394,084.34 = 85,229.97 : x
  2. Step 2: Convert to fraction form
    262,722.94/394,084.34 = 85,229.97/x
  3. Step 3: Cross multiply
    262,722.94x = 394,084.34 × 85,229.97
  4. Step 4: Simplify right side
    262,722.94x = 33,587,797,108.04
  5. Step 5: Solve for x
    x = 33,587,797,108.04/262,722.94
  6. Step 6: Final answer
    x = 127,844.93

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1.5x scale

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.