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Finding the Fourth Proportional to 367,720.80, 551,451.60 and 131,071.20

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Solution

The fourth proportional to 367,720.80, 551,451.60 and 131,071.20 is: 196,560.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,720.80 : 551,451.60 = 131,071.20 : x
  2. Step 2: Convert to fraction form
    367,720.80/551,451.60 = 131,071.20/x
  3. Step 3: Cross multiply
    367,720.80x = 551,451.60 × 131,071.20
  4. Step 4: Simplify right side
    367,720.80x = 72,279,422,953.92
  5. Step 5: Solve for x
    x = 72,279,422,953.92/367,720.80
  6. Step 6: Final answer
    x = 196,560.61

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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.