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Finding the Third Proportional to 208,511 and 455,260

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Solution

The third proportional to 208,511 and 455,260 is: 994,008.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,511 : 455,260 = 455,260 : x
  2. Step 2: Convert to fraction form
    208,511/455,260 = 455,260/x
  3. Step 3: Cross multiply
    208,511x = 455,260 × 455,260
  4. Step 4: Simplify right side
    208,511x = 207,261,667,600
  5. Step 5: Solve for x
    x = 207,261,667,600/208,511
  6. Step 6: Final answer
    x = 994,008.31

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.