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Finding the Third Proportional to 143,712 and 315,675

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Solution

The third proportional to 143,712 and 315,675 is: 693,405.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,712 : 315,675 = 315,675 : x
  2. Step 2: Convert to fraction form
    143,712/315,675 = 315,675/x
  3. Step 3: Cross multiply
    143,712x = 315,675 × 315,675
  4. Step 4: Simplify right side
    143,712x = 99,650,705,625
  5. Step 5: Solve for x
    x = 99,650,705,625/143,712
  6. Step 6: Final answer
    x = 693,405.60

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.