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Finding the Third Proportional to 280,552 and 406,086

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Solution

The third proportional to 280,552 and 406,086 is: 587,790.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,552 : 406,086 = 406,086 : x
  2. Step 2: Convert to fraction form
    280,552/406,086 = 406,086/x
  3. Step 3: Cross multiply
    280,552x = 406,086 × 406,086
  4. Step 4: Simplify right side
    280,552x = 164,905,839,396
  5. Step 5: Solve for x
    x = 164,905,839,396/280,552
  6. Step 6: Final answer
    x = 587,790.64

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.