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Finding the Fourth Proportional to 219,876, 303,453.18 and 124,381.86

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Solution

The fourth proportional to 219,876, 303,453.18 and 124,381.86 is: 171,660.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,876 : 303,453.18 = 124,381.86 : x
  2. Step 2: Convert to fraction form
    219,876/303,453.18 = 124,381.86/x
  3. Step 3: Cross multiply
    219,876x = 303,453.18 × 124,381.86
  4. Step 4: Simplify right side
    219,876x = 37,744,070,951.31
  5. Step 5: Solve for x
    x = 37,744,070,951.31/219,876
  6. Step 6: Final answer
    x = 171,660.71

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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.