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Finding the Fourth Proportional to 223,872.25, 308,942.18 and 121,897.66

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Solution

The fourth proportional to 223,872.25, 308,942.18 and 121,897.66 is: 168,217.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,872.25 : 308,942.18 = 121,897.66 : x
  2. Step 2: Convert to fraction form
    223,872.25/308,942.18 = 121,897.66/x
  3. Step 3: Cross multiply
    223,872.25x = 308,942.18 × 121,897.66
  4. Step 4: Simplify right side
    223,872.25x = 37,659,327,435.46
  5. Step 5: Solve for x
    x = 37,659,327,435.46/223,872.25
  6. Step 6: Final answer
    x = 168,217.94

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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.