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Finding the Fourth Proportional to 254,676.20, 382,013.87 and 67,687.70

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Solution

The fourth proportional to 254,676.20, 382,013.87 and 67,687.70 is: 101,531.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,676.20 : 382,013.87 = 67,687.70 : x
  2. Step 2: Convert to fraction form
    254,676.20/382,013.87 = 67,687.70/x
  3. Step 3: Cross multiply
    254,676.20x = 382,013.87 × 67,687.70
  4. Step 4: Simplify right side
    254,676.20x = 25,857,637,979.89
  5. Step 5: Solve for x
    x = 25,857,637,979.89/254,676.20
  6. Step 6: Final answer
    x = 101,531.43

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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.