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Finding the Third Proportional to 201,442 and 423,620

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Solution

The third proportional to 201,442 and 423,620 is: 890,846.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,442 : 423,620 = 423,620 : x
  2. Step 2: Convert to fraction form
    201,442/423,620 = 423,620/x
  3. Step 3: Cross multiply
    201,442x = 423,620 × 423,620
  4. Step 4: Simplify right side
    201,442x = 179,453,904,400
  5. Step 5: Solve for x
    x = 179,453,904,400/201,442
  6. Step 6: Final answer
    x = 890,846.52

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.