Home / 259,742.80-389,614.20-82,263.70

Finding the Fourth Proportional to 259,742.80, 389,614.20 and 82,263.70

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Solution

The fourth proportional to 259,742.80, 389,614.20 and 82,263.70 is: 123,395.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,742.80 : 389,614.20 = 82,263.70 : x
  2. Step 2: Convert to fraction form
    259,742.80/389,614.20 = 82,263.70/x
  3. Step 3: Cross multiply
    259,742.80x = 389,614.20 × 82,263.70
  4. Step 4: Simplify right side
    259,742.80x = 32,051,105,664.54
  5. Step 5: Solve for x
    x = 32,051,105,664.54/259,742.80
  6. Step 6: Final answer
    x = 123,395.55

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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.