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Finding the Third Proportional to 155,979 and 319,350.75

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Solution

The third proportional to 155,979 and 319,350.75 is: 653,837.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,979 : 319,350.75 = 319,350.75 : x
  2. Step 2: Convert to fraction form
    155,979/319,350.75 = 319,350.75/x
  3. Step 3: Cross multiply
    155,979x = 319,350.75 × 319,350.75
  4. Step 4: Simplify right side
    155,979x = 101,984,901,525.56
  5. Step 5: Solve for x
    x = 101,984,901,525.56/155,979
  6. Step 6: Final answer
    x = 653,837.39

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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.