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Finding the Third Proportional to 145,540 and 313,213

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Solution

The third proportional to 145,540 and 313,213 is: 674,057.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,540 : 313,213 = 313,213 : x
  2. Step 2: Convert to fraction form
    145,540/313,213 = 313,213/x
  3. Step 3: Cross multiply
    145,540x = 313,213 × 313,213
  4. Step 4: Simplify right side
    145,540x = 98,102,383,369
  5. Step 5: Solve for x
    x = 98,102,383,369/145,540
  6. Step 6: Final answer
    x = 674,057.88

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.