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Finding the Third Proportional to 142,215.75 and 313,956

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Solution

The third proportional to 142,215.75 and 313,956 is: 693,090.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,215.75 : 313,956 = 313,956 : x
  2. Step 2: Convert to fraction form
    142,215.75/313,956 = 313,956/x
  3. Step 3: Cross multiply
    142,215.75x = 313,956 × 313,956
  4. Step 4: Simplify right side
    142,215.75x = 98,568,369,936
  5. Step 5: Solve for x
    x = 98,568,369,936/142,215.75
  6. Step 6: Final answer
    x = 693,090.39

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.