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Finding the Third Proportional to 208,086 and 455,820

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Solution

The third proportional to 208,086 and 455,820 is: 998,490.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,086 : 455,820 = 455,820 : x
  2. Step 2: Convert to fraction form
    208,086/455,820 = 455,820/x
  3. Step 3: Cross multiply
    208,086x = 455,820 × 455,820
  4. Step 4: Simplify right side
    208,086x = 207,771,872,400
  5. Step 5: Solve for x
    x = 207,771,872,400/208,086
  6. Step 6: Final answer
    x = 998,490.40

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.