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Finding the Fourth Proportional to 260,675.08, 391,199.10 and 111,020.20

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Solution

The fourth proportional to 260,675.08, 391,199.10 and 111,020.20 is: 166,609.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,675.08 : 391,199.10 = 111,020.20 : x
  2. Step 2: Convert to fraction form
    260,675.08/391,199.10 = 111,020.20/x
  3. Step 3: Cross multiply
    260,675.08x = 391,199.10 × 111,020.20
  4. Step 4: Simplify right side
    260,675.08x = 43,431,002,321.82
  5. Step 5: Solve for x
    x = 43,431,002,321.82/260,675.08
  6. Step 6: Final answer
    x = 166,609.72

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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.