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Finding the Third Proportional to 210,915 and 453,836

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Solution

The third proportional to 210,915 and 453,836 is: 976,540.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,915 : 453,836 = 453,836 : x
  2. Step 2: Convert to fraction form
    210,915/453,836 = 453,836/x
  3. Step 3: Cross multiply
    210,915x = 453,836 × 453,836
  4. Step 4: Simplify right side
    210,915x = 205,967,114,896
  5. Step 5: Solve for x
    x = 205,967,114,896/210,915
  6. Step 6: Final answer
    x = 976,540.86

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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.