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Finding the Third Proportional to 211,436 and 440,360

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Solution

The third proportional to 211,436 and 440,360 is: 917,142.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,436 : 440,360 = 440,360 : x
  2. Step 2: Convert to fraction form
    211,436/440,360 = 440,360/x
  3. Step 3: Cross multiply
    211,436x = 440,360 × 440,360
  4. Step 4: Simplify right side
    211,436x = 193,916,929,600
  5. Step 5: Solve for x
    x = 193,916,929,600/211,436
  6. Step 6: Final answer
    x = 917,142.44

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.