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Finding the Fourth Proportional to 250,663.86, 345,993.57 and 161,239.86

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Solution

The fourth proportional to 250,663.86, 345,993.57 and 161,239.86 is: 222,560.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,663.86 : 345,993.57 = 161,239.86 : x
  2. Step 2: Convert to fraction form
    250,663.86/345,993.57 = 161,239.86/x
  3. Step 3: Cross multiply
    250,663.86x = 345,993.57 × 161,239.86
  4. Step 4: Simplify right side
    250,663.86x = 55,787,954,787.70
  5. Step 5: Solve for x
    x = 55,787,954,787.70/250,663.86
  6. Step 6: Final answer
    x = 222,560.82

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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.