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Finding the Fourth Proportional to 206,665.20, 309,924.90 and 73,549.80

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Solution

The fourth proportional to 206,665.20, 309,924.90 and 73,549.80 is: 110,298.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,665.20 : 309,924.90 = 73,549.80 : x
  2. Step 2: Convert to fraction form
    206,665.20/309,924.90 = 73,549.80/x
  3. Step 3: Cross multiply
    206,665.20x = 309,924.90 × 73,549.80
  4. Step 4: Simplify right side
    206,665.20x = 22,794,914,410.02
  5. Step 5: Solve for x
    x = 22,794,914,410.02/206,665.20
  6. Step 6: Final answer
    x = 110,298.76

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1.5x scale

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.