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Finding the Fourth Proportional to 206,279.60, 309,736.20 and 112,967.60

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Solution

The fourth proportional to 206,279.60, 309,736.20 and 112,967.60 is: 169,624.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,279.60 : 309,736.20 = 112,967.60 : x
  2. Step 2: Convert to fraction form
    206,279.60/309,736.20 = 112,967.60/x
  3. Step 3: Cross multiply
    206,279.60x = 309,736.20 × 112,967.60
  4. Step 4: Simplify right side
    206,279.60x = 34,990,155,147.12
  5. Step 5: Solve for x
    x = 34,990,155,147.12/206,279.60
  6. Step 6: Final answer
    x = 169,624.89

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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.