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Finding the Third Proportional to 263,642 and 408,570

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Solution

The third proportional to 263,642 and 408,570 is: 633,167.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,642 : 408,570 = 408,570 : x
  2. Step 2: Convert to fraction form
    263,642/408,570 = 408,570/x
  3. Step 3: Cross multiply
    263,642x = 408,570 × 408,570
  4. Step 4: Simplify right side
    263,642x = 166,929,444,900
  5. Step 5: Solve for x
    x = 166,929,444,900/263,642
  6. Step 6: Final answer
    x = 633,167.12

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.