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Finding the Third Proportional to 155,991.75 and 319,376.25

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Solution

The third proportional to 155,991.75 and 319,376.25 is: 653,888.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,991.75 : 319,376.25 = 319,376.25 : x
  2. Step 2: Convert to fraction form
    155,991.75/319,376.25 = 319,376.25/x
  3. Step 3: Cross multiply
    155,991.75x = 319,376.25 × 319,376.25
  4. Step 4: Simplify right side
    155,991.75x = 102,001,189,064.06
  5. Step 5: Solve for x
    x = 102,001,189,064.06/155,991.75
  6. Step 6: Final answer
    x = 653,888.36

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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.