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Finding the Third Proportional to 143,763 and 311,961

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Solution

The third proportional to 143,763 and 311,961 is: 676,945.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,763 : 311,961 = 311,961 : x
  2. Step 2: Convert to fraction form
    143,763/311,961 = 311,961/x
  3. Step 3: Cross multiply
    143,763x = 311,961 × 311,961
  4. Step 4: Simplify right side
    143,763x = 97,319,665,521
  5. Step 5: Solve for x
    x = 97,319,665,521/143,763
  6. Step 6: Final answer
    x = 676,945.15

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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.