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Finding the Fourth Proportional to 262,639.80, 394,251.30 and 162,912.60

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Solution

The fourth proportional to 262,639.80, 394,251.30 and 162,912.60 is: 244,549.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,639.80 : 394,251.30 = 162,912.60 : x
  2. Step 2: Convert to fraction form
    262,639.80/394,251.30 = 162,912.60/x
  3. Step 3: Cross multiply
    262,639.80x = 394,251.30 × 162,912.60
  4. Step 4: Simplify right side
    262,639.80x = 64,228,504,336.38
  5. Step 5: Solve for x
    x = 64,228,504,336.38/262,639.80
  6. Step 6: Final answer
    x = 244,549.78

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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.