Home / 259,972.28-389,966.36-89,191.60

Finding the Fourth Proportional to 259,972.28, 389,966.36 and 89,191.60

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Solution

The fourth proportional to 259,972.28, 389,966.36 and 89,191.60 is: 133,790.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,972.28 : 389,966.36 = 89,191.60 : x
  2. Step 2: Convert to fraction form
    259,972.28/389,966.36 = 89,191.60/x
  3. Step 3: Cross multiply
    259,972.28x = 389,966.36 × 89,191.60
  4. Step 4: Simplify right side
    259,972.28x = 34,781,723,594.58
  5. Step 5: Solve for x
    x = 34,781,723,594.58/259,972.28
  6. Step 6: Final answer
    x = 133,790.12

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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.