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Finding the Fourth Proportional to 321,902.73, 482,940.20 and 111,540.67

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Solution

The fourth proportional to 321,902.73, 482,940.20 and 111,540.67 is: 167,340.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,902.73 : 482,940.20 = 111,540.67 : x
  2. Step 2: Convert to fraction form
    321,902.73/482,940.20 = 111,540.67/x
  3. Step 3: Cross multiply
    321,902.73x = 482,940.20 × 111,540.67
  4. Step 4: Simplify right side
    321,902.73x = 53,867,472,549.44
  5. Step 5: Solve for x
    x = 53,867,472,549.44/321,902.73
  6. Step 6: Final answer
    x = 167,340.84

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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.