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Finding the Fourth Proportional to 214,645.13, 321,963.92 and 74,401.73

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Solution

The fourth proportional to 214,645.13, 321,963.92 and 74,401.73 is: 111,601.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,645.13 : 321,963.92 = 74,401.73 : x
  2. Step 2: Convert to fraction form
    214,645.13/321,963.92 = 74,401.73/x
  3. Step 3: Cross multiply
    214,645.13x = 321,963.92 × 74,401.73
  4. Step 4: Simplify right side
    214,645.13x = 23,954,672,273.57
  5. Step 5: Solve for x
    x = 23,954,672,273.57/214,645.13
  6. Step 6: Final answer
    x = 111,601.28

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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.