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Finding the Fourth Proportional to 206,326.20, 309,309.30 and 80,052.60

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Solution

The fourth proportional to 206,326.20, 309,309.30 and 80,052.60 is: 120,009.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,326.20 : 309,309.30 = 80,052.60 : x
  2. Step 2: Convert to fraction form
    206,326.20/309,309.30 = 80,052.60/x
  3. Step 3: Cross multiply
    206,326.20x = 309,309.30 × 80,052.60
  4. Step 4: Simplify right side
    206,326.20x = 24,761,013,669.18
  5. Step 5: Solve for x
    x = 24,761,013,669.18/206,326.20
  6. Step 6: Final answer
    x = 120,009.06

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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.