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Finding the Third Proportional to 197,728 and 426,560

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Solution

The third proportional to 197,728 and 426,560 is: 920,220.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,728 : 426,560 = 426,560 : x
  2. Step 2: Convert to fraction form
    197,728/426,560 = 426,560/x
  3. Step 3: Cross multiply
    197,728x = 426,560 × 426,560
  4. Step 4: Simplify right side
    197,728x = 181,953,433,600
  5. Step 5: Solve for x
    x = 181,953,433,600/197,728
  6. Step 6: Final answer
    x = 920,220.88

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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.