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Finding the Third Proportional to 196,137 and 423,378

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Solution

The third proportional to 196,137 and 423,378 is: 913,896.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,137 : 423,378 = 423,378 : x
  2. Step 2: Convert to fraction form
    196,137/423,378 = 423,378/x
  3. Step 3: Cross multiply
    196,137x = 423,378 × 423,378
  4. Step 4: Simplify right side
    196,137x = 179,248,930,884
  5. Step 5: Solve for x
    x = 179,248,930,884/196,137
  6. Step 6: Final answer
    x = 913,896.57

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.