Home / 259,744.40-389,321.52-109,891.16

Finding the Fourth Proportional to 259,744.40, 389,321.52 and 109,891.16

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Solution

The fourth proportional to 259,744.40, 389,321.52 and 109,891.16 is: 164,711.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,744.40 : 389,321.52 = 109,891.16 : x
  2. Step 2: Convert to fraction form
    259,744.40/389,321.52 = 109,891.16/x
  3. Step 3: Cross multiply
    259,744.40x = 389,321.52 × 109,891.16
  4. Step 4: Simplify right side
    259,744.40x = 42,782,993,445.76
  5. Step 5: Solve for x
    x = 42,782,993,445.76/259,744.40
  6. Step 6: Final answer
    x = 164,711.90

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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.