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Finding the Fourth Proportional to 206,201.80, 309,226.83 and 71,231.52

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Solution

The fourth proportional to 206,201.80, 309,226.83 and 71,231.52 is: 106,821.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,201.80 : 309,226.83 = 71,231.52 : x
  2. Step 2: Convert to fraction form
    206,201.80/309,226.83 = 71,231.52/x
  3. Step 3: Cross multiply
    206,201.80x = 309,226.83 × 71,231.52
  4. Step 4: Simplify right side
    206,201.80x = 22,026,697,125.68
  5. Step 5: Solve for x
    x = 22,026,697,125.68/206,201.80
  6. Step 6: Final answer
    x = 106,821.07

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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.