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Finding the Third Proportional to 266,436 and 398,844

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Solution

The third proportional to 266,436 and 398,844 is: 597,053.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,436 : 398,844 = 398,844 : x
  2. Step 2: Convert to fraction form
    266,436/398,844 = 398,844/x
  3. Step 3: Cross multiply
    266,436x = 398,844 × 398,844
  4. Step 4: Simplify right side
    266,436x = 159,076,536,336
  5. Step 5: Solve for x
    x = 159,076,536,336/266,436
  6. Step 6: Final answer
    x = 597,053.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.