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Finding the Third Proportional to 131,647 and 289,037

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Solution

The third proportional to 131,647 and 289,037 is: 634,593.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,647 : 289,037 = 289,037 : x
  2. Step 2: Convert to fraction form
    131,647/289,037 = 289,037/x
  3. Step 3: Cross multiply
    131,647x = 289,037 × 289,037
  4. Step 4: Simplify right side
    131,647x = 83,542,387,369
  5. Step 5: Solve for x
    x = 83,542,387,369/131,647
  6. Step 6: Final answer
    x = 634,593.93

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.