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Finding the Third Proportional to 212,640 and 460,272

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Solution

The third proportional to 212,640 and 460,272 is: 996,286.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,640 : 460,272 = 460,272 : x
  2. Step 2: Convert to fraction form
    212,640/460,272 = 460,272/x
  3. Step 3: Cross multiply
    212,640x = 460,272 × 460,272
  4. Step 4: Simplify right side
    212,640x = 211,850,313,984
  5. Step 5: Solve for x
    x = 211,850,313,984/212,640
  6. Step 6: Final answer
    x = 996,286.28

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.