Home / 485,321.40-727,982.10-130,371.30

Finding the Fourth Proportional to 485,321.40, 727,982.10 and 130,371.30

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Solution

The fourth proportional to 485,321.40, 727,982.10 and 130,371.30 is: 195,556.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,321.40 : 727,982.10 = 130,371.30 : x
  2. Step 2: Convert to fraction form
    485,321.40/727,982.10 = 130,371.30/x
  3. Step 3: Cross multiply
    485,321.40x = 727,982.10 × 130,371.30
  4. Step 4: Simplify right side
    485,321.40x = 94,907,972,753.73
  5. Step 5: Solve for x
    x = 94,907,972,753.73/485,321.40
  6. Step 6: Final answer
    x = 195,556.95

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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.