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Finding the Third Proportional to 211,398 and 458,220

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Solution

The third proportional to 211,398 and 458,220 is: 993,224.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,398 : 458,220 = 458,220 : x
  2. Step 2: Convert to fraction form
    211,398/458,220 = 458,220/x
  3. Step 3: Cross multiply
    211,398x = 458,220 × 458,220
  4. Step 4: Simplify right side
    211,398x = 209,965,568,400
  5. Step 5: Solve for x
    x = 209,965,568,400/211,398
  6. Step 6: Final answer
    x = 993,224.01

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.