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Finding the Third Proportional to 155,969 and 319,327

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Solution

The third proportional to 155,969 and 319,327 is: 653,782.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,969 : 319,327 = 319,327 : x
  2. Step 2: Convert to fraction form
    155,969/319,327 = 319,327/x
  3. Step 3: Cross multiply
    155,969x = 319,327 × 319,327
  4. Step 4: Simplify right side
    155,969x = 101,969,732,929
  5. Step 5: Solve for x
    x = 101,969,732,929/155,969
  6. Step 6: Final answer
    x = 653,782.05

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.