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Finding the Third Proportional to 197,640 and 426,312

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Solution

The third proportional to 197,640 and 426,312 is: 919,560.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,640 : 426,312 = 426,312 : x
  2. Step 2: Convert to fraction form
    197,640/426,312 = 426,312/x
  3. Step 3: Cross multiply
    197,640x = 426,312 × 426,312
  4. Step 4: Simplify right side
    197,640x = 181,741,921,344
  5. Step 5: Solve for x
    x = 181,741,921,344/197,640
  6. Step 6: Final answer
    x = 919,560.42

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.