Home / 321,260.20-481,891.38-81,374.02

Finding the Fourth Proportional to 321,260.20, 481,891.38 and 81,374.02

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Solution

The fourth proportional to 321,260.20, 481,891.38 and 81,374.02 is: 122,061.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,260.20 : 481,891.38 = 81,374.02 : x
  2. Step 2: Convert to fraction form
    321,260.20/481,891.38 = 81,374.02/x
  3. Step 3: Cross multiply
    321,260.20x = 481,891.38 × 81,374.02
  4. Step 4: Simplify right side
    321,260.20x = 39,213,438,793.95
  5. Step 5: Solve for x
    x = 39,213,438,793.95/321,260.20
  6. Step 6: Final answer
    x = 122,061.30

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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.