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Finding the Third Proportional to 101,438 and 221,992

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Solution

The third proportional to 101,438 and 221,992 is: 485,818.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,438 : 221,992 = 221,992 : x
  2. Step 2: Convert to fraction form
    101,438/221,992 = 221,992/x
  3. Step 3: Cross multiply
    101,438x = 221,992 × 221,992
  4. Step 4: Simplify right side
    101,438x = 49,280,448,064
  5. Step 5: Solve for x
    x = 49,280,448,064/101,438
  6. Step 6: Final answer
    x = 485,818.41

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.