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Finding the Fourth Proportional to 263,150, 394,527.36 and 85,551.60

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Solution

The fourth proportional to 263,150, 394,527.36 and 85,551.60 is: 128,263.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,150 : 394,527.36 = 85,551.60 : x
  2. Step 2: Convert to fraction form
    263,150/394,527.36 = 85,551.60/x
  3. Step 3: Cross multiply
    263,150x = 394,527.36 × 85,551.60
  4. Step 4: Simplify right side
    263,150x = 33,752,446,891.78
  5. Step 5: Solve for x
    x = 33,752,446,891.78/263,150
  6. Step 6: Final answer
    x = 128,263.15

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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.