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Finding the Fourth Proportional to 321,481.95, 482,242.98 and 84,824.87

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Solution

The fourth proportional to 321,481.95, 482,242.98 and 84,824.87 is: 127,242.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,481.95 : 482,242.98 = 84,824.87 : x
  2. Step 2: Convert to fraction form
    321,481.95/482,242.98 = 84,824.87/x
  3. Step 3: Cross multiply
    321,481.95x = 482,242.98 × 84,824.87
  4. Step 4: Simplify right side
    321,481.95x = 40,906,195,675.70
  5. Step 5: Solve for x
    x = 40,906,195,675.70/321,481.95
  6. Step 6: Final answer
    x = 127,242.59

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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.