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Finding the Third Proportional to 157,813 and 221,976

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Solution

The third proportional to 157,813 and 221,976 is: 312,226.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,813 : 221,976 = 221,976 : x
  2. Step 2: Convert to fraction form
    157,813/221,976 = 221,976/x
  3. Step 3: Cross multiply
    157,813x = 221,976 × 221,976
  4. Step 4: Simplify right side
    157,813x = 49,273,344,576
  5. Step 5: Solve for x
    x = 49,273,344,576/157,813
  6. Step 6: Final answer
    x = 312,226.14

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.