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Finding the Third Proportional to 196,739 and 422,152

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Solution

The third proportional to 196,739 and 422,152 is: 905,831.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,739 : 422,152 = 422,152 : x
  2. Step 2: Convert to fraction form
    196,739/422,152 = 422,152/x
  3. Step 3: Cross multiply
    196,739x = 422,152 × 422,152
  4. Step 4: Simplify right side
    196,739x = 178,212,311,104
  5. Step 5: Solve for x
    x = 178,212,311,104/196,739
  6. Step 6: Final answer
    x = 905,831.13

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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.