Home / 259,743.20-389,614.80-218,408.90

Finding the Fourth Proportional to 259,743.20, 389,614.80 and 218,408.90

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Solution

The fourth proportional to 259,743.20, 389,614.80 and 218,408.90 is: 327,613.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,743.20 : 389,614.80 = 218,408.90 : x
  2. Step 2: Convert to fraction form
    259,743.20/389,614.80 = 218,408.90/x
  3. Step 3: Cross multiply
    259,743.20x = 389,614.80 × 218,408.90
  4. Step 4: Simplify right side
    259,743.20x = 85,095,339,891.72
  5. Step 5: Solve for x
    x = 85,095,339,891.72/259,743.20
  6. Step 6: Final answer
    x = 327,613.35

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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.