Home / 259,919.60-389,927.96-82,378.96

Finding the Fourth Proportional to 259,919.60, 389,927.96 and 82,378.96

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Solution

The fourth proportional to 259,919.60, 389,927.96 and 82,378.96 is: 123,583.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,919.60 : 389,927.96 = 82,378.96 : x
  2. Step 2: Convert to fraction form
    259,919.60/389,927.96 = 82,378.96/x
  3. Step 3: Cross multiply
    259,919.60x = 389,927.96 × 82,378.96
  4. Step 4: Simplify right side
    259,919.60x = 32,121,859,819.72
  5. Step 5: Solve for x
    x = 32,121,859,819.72/259,919.60
  6. Step 6: Final answer
    x = 123,583.83

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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.