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Finding the Fourth Proportional to 218,571.66, 301,620.78 and 121,773.24

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Solution

The fourth proportional to 218,571.66, 301,620.78 and 121,773.24 is: 168,042.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,571.66 : 301,620.78 = 121,773.24 : x
  2. Step 2: Convert to fraction form
    218,571.66/301,620.78 = 121,773.24/x
  3. Step 3: Cross multiply
    218,571.66x = 301,620.78 × 121,773.24
  4. Step 4: Simplify right side
    218,571.66x = 36,729,339,631.93
  5. Step 5: Solve for x
    x = 36,729,339,631.93/218,571.66
  6. Step 6: Final answer
    x = 168,042.55

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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.