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Finding the Third Proportional to 149,991.75 and 319,423.50

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Solution

The third proportional to 149,991.75 and 319,423.50 is: 680,246.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,991.75 : 319,423.50 = 319,423.50 : x
  2. Step 2: Convert to fraction form
    149,991.75/319,423.50 = 319,423.50/x
  3. Step 3: Cross multiply
    149,991.75x = 319,423.50 × 319,423.50
  4. Step 4: Simplify right side
    149,991.75x = 102,031,372,352.25
  5. Step 5: Solve for x
    x = 102,031,372,352.25/149,991.75
  6. Step 6: Final answer
    x = 680,246.56

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.