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Finding the Third Proportional to 211,813 and 456,170

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Solution

The third proportional to 211,813 and 456,170 is: 982,428.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,813 : 456,170 = 456,170 : x
  2. Step 2: Convert to fraction form
    211,813/456,170 = 456,170/x
  3. Step 3: Cross multiply
    211,813x = 456,170 × 456,170
  4. Step 4: Simplify right side
    211,813x = 208,091,068,900
  5. Step 5: Solve for x
    x = 208,091,068,900/211,813
  6. Step 6: Final answer
    x = 982,428.22

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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.