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Finding the Fourth Proportional to 367,855.80, 551,654.10 and 131,206.20

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Solution

The fourth proportional to 367,855.80, 551,654.10 and 131,206.20 is: 196,763.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,855.80 : 551,654.10 = 131,206.20 : x
  2. Step 2: Convert to fraction form
    367,855.80/551,654.10 = 131,206.20/x
  3. Step 3: Cross multiply
    367,855.80x = 551,654.10 × 131,206.20
  4. Step 4: Simplify right side
    367,855.80x = 72,380,438,175.42
  5. Step 5: Solve for x
    x = 72,380,438,175.42/367,855.80
  6. Step 6: Final answer
    x = 196,763.07

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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.