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Finding the Third Proportional to 131,416 and 285,808

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Solution

The third proportional to 131,416 and 285,808 is: 621,584.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,416 : 285,808 = 285,808 : x
  2. Step 2: Convert to fraction form
    131,416/285,808 = 285,808/x
  3. Step 3: Cross multiply
    131,416x = 285,808 × 285,808
  4. Step 4: Simplify right side
    131,416x = 81,686,212,864
  5. Step 5: Solve for x
    x = 81,686,212,864/131,416
  6. Step 6: Final answer
    x = 621,584.99

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.