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Finding the Third Proportional to 178,615 and 381,796

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Solution

The third proportional to 178,615 and 381,796 is: 816,102.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,615 : 381,796 = 381,796 : x
  2. Step 2: Convert to fraction form
    178,615/381,796 = 381,796/x
  3. Step 3: Cross multiply
    178,615x = 381,796 × 381,796
  4. Step 4: Simplify right side
    178,615x = 145,768,185,616
  5. Step 5: Solve for x
    x = 145,768,185,616/178,615
  6. Step 6: Final answer
    x = 816,102.71

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.