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Finding the Fourth Proportional to 262,748.80, 394,122.93 and 85,255.80

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Solution

The fourth proportional to 262,748.80, 394,122.93 and 85,255.80 is: 127,883.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,748.80 : 394,122.93 = 85,255.80 : x
  2. Step 2: Convert to fraction form
    262,748.80/394,122.93 = 85,255.80/x
  3. Step 3: Cross multiply
    262,748.80x = 394,122.93 × 85,255.80
  4. Step 4: Simplify right side
    262,748.80x = 33,601,265,695.49
  5. Step 5: Solve for x
    x = 33,601,265,695.49/262,748.80
  6. Step 6: Final answer
    x = 127,883.61

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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.