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Finding the Third Proportional to 150,915.75 and 319,821

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Solution

The third proportional to 150,915.75 and 319,821 is: 677,765.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,915.75 : 319,821 = 319,821 : x
  2. Step 2: Convert to fraction form
    150,915.75/319,821 = 319,821/x
  3. Step 3: Cross multiply
    150,915.75x = 319,821 × 319,821
  4. Step 4: Simplify right side
    150,915.75x = 102,285,472,041
  5. Step 5: Solve for x
    x = 102,285,472,041/150,915.75
  6. Step 6: Final answer
    x = 677,765.39

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.