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Finding the Third Proportional to 279,667.50 and 419,420.25

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Solution

The third proportional to 279,667.50 and 419,420.25 is: 629,008.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,667.50 : 419,420.25 = 419,420.25 : x
  2. Step 2: Convert to fraction form
    279,667.50/419,420.25 = 419,420.25/x
  3. Step 3: Cross multiply
    279,667.50x = 419,420.25 × 419,420.25
  4. Step 4: Simplify right side
    279,667.50x = 175,913,346,110.06
  5. Step 5: Solve for x
    x = 175,913,346,110.06/279,667.50
  6. Step 6: Final answer
    x = 629,008.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.