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Finding the Third Proportional to 131,411 and 285,799

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Solution

The third proportional to 131,411 and 285,799 is: 621,569.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,411 : 285,799 = 285,799 : x
  2. Step 2: Convert to fraction form
    131,411/285,799 = 285,799/x
  3. Step 3: Cross multiply
    131,411x = 285,799 × 285,799
  4. Step 4: Simplify right side
    131,411x = 81,681,068,401
  5. Step 5: Solve for x
    x = 81,681,068,401/131,411
  6. Step 6: Final answer
    x = 621,569.49

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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.