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Finding the Third Proportional to 155,471 and 343,612

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Solution

The third proportional to 155,471 and 343,612 is: 759,429.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,471 : 343,612 = 343,612 : x
  2. Step 2: Convert to fraction form
    155,471/343,612 = 343,612/x
  3. Step 3: Cross multiply
    155,471x = 343,612 × 343,612
  4. Step 4: Simplify right side
    155,471x = 118,069,206,544
  5. Step 5: Solve for x
    x = 118,069,206,544/155,471
  6. Step 6: Final answer
    x = 759,429.13

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.