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Finding the Third Proportional to 143,774 and 311,982

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Solution

The third proportional to 143,774 and 311,982 is: 676,984.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,774 : 311,982 = 311,982 : x
  2. Step 2: Convert to fraction form
    143,774/311,982 = 311,982/x
  3. Step 3: Cross multiply
    143,774x = 311,982 × 311,982
  4. Step 4: Simplify right side
    143,774x = 97,332,768,324
  5. Step 5: Solve for x
    x = 97,332,768,324/143,774
  6. Step 6: Final answer
    x = 676,984.49

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.