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Finding the Fourth Proportional to 263,104.92, 394,662.24 and 85,611.24

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Solution

The fourth proportional to 263,104.92, 394,662.24 and 85,611.24 is: 128,418.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,104.92 : 394,662.24 = 85,611.24 : x
  2. Step 2: Convert to fraction form
    263,104.92/394,662.24 = 85,611.24/x
  3. Step 3: Cross multiply
    263,104.92x = 394,662.24 × 85,611.24
  4. Step 4: Simplify right side
    263,104.92x = 33,787,523,747.58
  5. Step 5: Solve for x
    x = 33,787,523,747.58/263,104.92
  6. Step 6: Final answer
    x = 128,418.44

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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.