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Finding the Fourth Proportional to 218,233.06, 301,126.90 and 122,721.30

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Solution

The fourth proportional to 218,233.06, 301,126.90 and 122,721.30 is: 169,335.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,233.06 : 301,126.90 = 122,721.30 : x
  2. Step 2: Convert to fraction form
    218,233.06/301,126.90 = 122,721.30/x
  3. Step 3: Cross multiply
    218,233.06x = 301,126.90 × 122,721.30
  4. Step 4: Simplify right side
    218,233.06x = 36,954,684,632.97
  5. Step 5: Solve for x
    x = 36,954,684,632.97/218,233.06
  6. Step 6: Final answer
    x = 169,335.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.