Home / 259,613.10-389,460.15-82,103.22

Finding the Fourth Proportional to 259,613.10, 389,460.15 and 82,103.22

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Solution

The fourth proportional to 259,613.10, 389,460.15 and 82,103.22 is: 123,167.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,613.10 : 389,460.15 = 82,103.22 : x
  2. Step 2: Convert to fraction form
    259,613.10/389,460.15 = 82,103.22/x
  3. Step 3: Cross multiply
    259,613.10x = 389,460.15 × 82,103.22
  4. Step 4: Simplify right side
    259,613.10x = 31,975,932,376.68
  5. Step 5: Solve for x
    x = 31,975,932,376.68/259,613.10
  6. Step 6: Final answer
    x = 123,167.64

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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.