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Finding the Fourth Proportional to 277,286.70, 415,928.70 and 108,687.90

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Solution

The fourth proportional to 277,286.70, 415,928.70 and 108,687.90 is: 163,031.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,286.70 : 415,928.70 = 108,687.90 : x
  2. Step 2: Convert to fraction form
    277,286.70/415,928.70 = 108,687.90/x
  3. Step 3: Cross multiply
    277,286.70x = 415,928.70 × 108,687.90
  4. Step 4: Simplify right side
    277,286.70x = 45,206,416,952.73
  5. Step 5: Solve for x
    x = 45,206,416,952.73/277,286.70
  6. Step 6: Final answer
    x = 163,031.32

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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.