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Finding the Third Proportional to 212,372 and 456,228

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Solution

The third proportional to 212,372 and 456,228 is: 980,091.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,372 : 456,228 = 456,228 : x
  2. Step 2: Convert to fraction form
    212,372/456,228 = 456,228/x
  3. Step 3: Cross multiply
    212,372x = 456,228 × 456,228
  4. Step 4: Simplify right side
    212,372x = 208,143,987,984
  5. Step 5: Solve for x
    x = 208,143,987,984/212,372
  6. Step 6: Final answer
    x = 980,091.48

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.