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Finding the Third Proportional to 196,815 and 313,323

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Solution

The third proportional to 196,815 and 313,323 is: 498,799.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,815 : 313,323 = 313,323 : x
  2. Step 2: Convert to fraction form
    196,815/313,323 = 313,323/x
  3. Step 3: Cross multiply
    196,815x = 313,323 × 313,323
  4. Step 4: Simplify right side
    196,815x = 98,171,302,329
  5. Step 5: Solve for x
    x = 98,171,302,329/196,815
  6. Step 6: Final answer
    x = 498,799.90

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.