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Finding the Third Proportional to 90,640 and 192,284

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Solution

The third proportional to 90,640 and 192,284 is: 407,911.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,640 : 192,284 = 192,284 : x
  2. Step 2: Convert to fraction form
    90,640/192,284 = 192,284/x
  3. Step 3: Cross multiply
    90,640x = 192,284 × 192,284
  4. Step 4: Simplify right side
    90,640x = 36,973,136,656
  5. Step 5: Solve for x
    x = 36,973,136,656/90,640
  6. Step 6: Final answer
    x = 407,911.92

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.