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Finding the Third Proportional to 196,108 and 423,320

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Solution

The third proportional to 196,108 and 423,320 is: 913,781.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,108 : 423,320 = 423,320 : x
  2. Step 2: Convert to fraction form
    196,108/423,320 = 423,320/x
  3. Step 3: Cross multiply
    196,108x = 423,320 × 423,320
  4. Step 4: Simplify right side
    196,108x = 179,199,822,400
  5. Step 5: Solve for x
    x = 179,199,822,400/196,108
  6. Step 6: Final answer
    x = 913,781.30

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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.