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Finding the Fourth Proportional to 262,996.28, 394,494.41 and 218,654.85

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Solution

The fourth proportional to 262,996.28, 394,494.41 and 218,654.85 is: 327,982.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,996.28 : 394,494.41 = 218,654.85 : x
  2. Step 2: Convert to fraction form
    262,996.28/394,494.41 = 218,654.85/x
  3. Step 3: Cross multiply
    262,996.28x = 394,494.41 × 218,654.85
  4. Step 4: Simplify right side
    262,996.28x = 86,258,116,591.03
  5. Step 5: Solve for x
    x = 86,258,116,591.03/262,996.28
  6. Step 6: Final answer
    x = 327,982.28

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Double scale
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Similar ratio
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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.