Home / 206,402.10-309,311.55-143,999.70

Finding the Fourth Proportional to 206,402.10, 309,311.55 and 143,999.70

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Solution

The fourth proportional to 206,402.10, 309,311.55 and 143,999.70 is: 215,796.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,402.10 : 309,311.55 = 143,999.70 : x
  2. Step 2: Convert to fraction form
    206,402.10/309,311.55 = 143,999.70/x
  3. Step 3: Cross multiply
    206,402.10x = 309,311.55 × 143,999.70
  4. Step 4: Simplify right side
    206,402.10x = 44,540,770,406.54
  5. Step 5: Solve for x
    x = 44,540,770,406.54/206,402.10
  6. Step 6: Final answer
    x = 215,796.11

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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.