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Finding the Fourth Proportional to 154,461.20, 231,691.80 and 49,290.80

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Solution

The fourth proportional to 154,461.20, 231,691.80 and 49,290.80 is: 73,936.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,461.20 : 231,691.80 = 49,290.80 : x
  2. Step 2: Convert to fraction form
    154,461.20/231,691.80 = 49,290.80/x
  3. Step 3: Cross multiply
    154,461.20x = 231,691.80 × 49,290.80
  4. Step 4: Simplify right side
    154,461.20x = 11,420,274,175.44
  5. Step 5: Solve for x
    x = 11,420,274,175.44/154,461.20
  6. Step 6: Final answer
    x = 73,936.20

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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.