Home / 259,742.40-389,650.05-82,230.90

Finding the Fourth Proportional to 259,742.40, 389,650.05 and 82,230.90

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Solution

The fourth proportional to 259,742.40, 389,650.05 and 82,230.90 is: 123,357.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,742.40 : 389,650.05 = 82,230.90 : x
  2. Step 2: Convert to fraction form
    259,742.40/389,650.05 = 82,230.90/x
  3. Step 3: Cross multiply
    259,742.40x = 389,650.05 × 82,230.90
  4. Step 4: Simplify right side
    259,742.40x = 32,041,274,296.55
  5. Step 5: Solve for x
    x = 32,041,274,296.55/259,742.40
  6. Step 6: Final answer
    x = 123,357.89

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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.