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Finding the Third Proportional to 150,390 and 313,218.75

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Solution

The third proportional to 150,390 and 313,218.75 is: 652,343.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,390 : 313,218.75 = 313,218.75 : x
  2. Step 2: Convert to fraction form
    150,390/313,218.75 = 313,218.75/x
  3. Step 3: Cross multiply
    150,390x = 313,218.75 × 313,218.75
  4. Step 4: Simplify right side
    150,390x = 98,105,985,351.56
  5. Step 5: Solve for x
    x = 98,105,985,351.56/150,390
  6. Step 6: Final answer
    x = 652,343.81

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.