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Finding the Fourth Proportional to 206,369.88, 309,555.32 and 87,965.68

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Solution

The fourth proportional to 206,369.88, 309,555.32 and 87,965.68 is: 131,948.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,369.88 : 309,555.32 = 87,965.68 : x
  2. Step 2: Convert to fraction form
    206,369.88/309,555.32 = 87,965.68/x
  3. Step 3: Cross multiply
    206,369.88x = 309,555.32 × 87,965.68
  4. Step 4: Simplify right side
    206,369.88x = 27,230,244,221.42
  5. Step 5: Solve for x
    x = 27,230,244,221.42/206,369.88
  6. Step 6: Final answer
    x = 131,948.73

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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.