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Finding the Fourth Proportional to 222,366.87, 306,863.24 and 121,764.87

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Solution

The fourth proportional to 222,366.87, 306,863.24 and 121,764.87 is: 168,033.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,366.87 : 306,863.24 = 121,764.87 : x
  2. Step 2: Convert to fraction form
    222,366.87/306,863.24 = 121,764.87/x
  3. Step 3: Cross multiply
    222,366.87x = 306,863.24 × 121,764.87
  4. Step 4: Simplify right side
    222,366.87x = 37,365,161,917.55
  5. Step 5: Solve for x
    x = 37,365,161,917.55/222,366.87
  6. Step 6: Final answer
    x = 168,033.85

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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.