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Finding the Third Proportional to 142,894 and 313,436

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Solution

The third proportional to 142,894 and 313,436 is: 687,517.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,894 : 313,436 = 313,436 : x
  2. Step 2: Convert to fraction form
    142,894/313,436 = 313,436/x
  3. Step 3: Cross multiply
    142,894x = 313,436 × 313,436
  4. Step 4: Simplify right side
    142,894x = 98,242,126,096
  5. Step 5: Solve for x
    x = 98,242,126,096/142,894
  6. Step 6: Final answer
    x = 687,517.50

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.