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Finding the Third Proportional to 143,502 and 312,837

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Solution

The third proportional to 143,502 and 312,837 is: 681,990.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,502 : 312,837 = 312,837 : x
  2. Step 2: Convert to fraction form
    143,502/312,837 = 312,837/x
  3. Step 3: Cross multiply
    143,502x = 312,837 × 312,837
  4. Step 4: Simplify right side
    143,502x = 97,866,988,569
  5. Step 5: Solve for x
    x = 97,866,988,569/143,502
  6. Step 6: Final answer
    x = 681,990.42

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.