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Finding the Fourth Proportional to 222,481.68, 307,020.60 and 121,878.96

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Solution

The fourth proportional to 222,481.68, 307,020.60 and 121,878.96 is: 168,190.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,481.68 : 307,020.60 = 121,878.96 : x
  2. Step 2: Convert to fraction form
    222,481.68/307,020.60 = 121,878.96/x
  3. Step 3: Cross multiply
    222,481.68x = 307,020.60 × 121,878.96
  4. Step 4: Simplify right side
    222,481.68x = 37,419,351,426.58
  5. Step 5: Solve for x
    x = 37,419,351,426.58/222,481.68
  6. Step 6: Final answer
    x = 168,190.71

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1.5x scale

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.