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Finding the Fourth Proportional to 281,956.35, 389,250.96 and 217,757.86

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Solution

The fourth proportional to 281,956.35, 389,250.96 and 217,757.86 is: 300,622.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,956.35 : 389,250.96 = 217,757.86 : x
  2. Step 2: Convert to fraction form
    281,956.35/389,250.96 = 217,757.86/x
  3. Step 3: Cross multiply
    281,956.35x = 389,250.96 × 217,757.86
  4. Step 4: Simplify right side
    281,956.35x = 84,762,456,052.55
  5. Step 5: Solve for x
    x = 84,762,456,052.55/281,956.35
  6. Step 6: Final answer
    x = 300,622.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.