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Finding the Fourth Proportional to 263,494.62, 394,322.58 and 215,555.58

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Solution

The fourth proportional to 263,494.62, 394,322.58 and 215,555.58 is: 322,581.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,494.62 : 394,322.58 = 215,555.58 : x
  2. Step 2: Convert to fraction form
    263,494.62/394,322.58 = 215,555.58/x
  3. Step 3: Cross multiply
    263,494.62x = 394,322.58 × 215,555.58
  4. Step 4: Simplify right side
    263,494.62x = 84,998,432,439.00
  5. Step 5: Solve for x
    x = 84,998,432,439.00/263,494.62
  6. Step 6: Final answer
    x = 322,581.28

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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.