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Finding the Fourth Proportional to 321,481.95, 482,243.01 and 84,824.88

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Solution

The fourth proportional to 321,481.95, 482,243.01 and 84,824.88 is: 127,242.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,481.95 : 482,243.01 = 84,824.88 : x
  2. Step 2: Convert to fraction form
    321,481.95/482,243.01 = 84,824.88/x
  3. Step 3: Cross multiply
    321,481.95x = 482,243.01 × 84,824.88
  4. Step 4: Simplify right side
    321,481.95x = 40,906,205,454.09
  5. Step 5: Solve for x
    x = 40,906,205,454.09/321,481.95
  6. Step 6: Final answer
    x = 127,242.62

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1.5x scale

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.