Home / 259,778.43-389,689.71-91,284.18

Finding the Fourth Proportional to 259,778.43, 389,689.71 and 91,284.18

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Solution

The fourth proportional to 259,778.43, 389,689.71 and 91,284.18 is: 136,934.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,778.43 : 389,689.71 = 91,284.18 : x
  2. Step 2: Convert to fraction form
    259,778.43/389,689.71 = 91,284.18/x
  3. Step 3: Cross multiply
    259,778.43x = 389,689.71 × 91,284.18
  4. Step 4: Simplify right side
    259,778.43x = 35,572,505,631.79
  5. Step 5: Solve for x
    x = 35,572,505,631.79/259,778.43
  6. Step 6: Final answer
    x = 136,934.02

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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.