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Finding the Third Proportional to 131,406 and 289,054

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Solution

The third proportional to 131,406 and 289,054 is: 635,832.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,406 : 289,054 = 289,054 : x
  2. Step 2: Convert to fraction form
    131,406/289,054 = 289,054/x
  3. Step 3: Cross multiply
    131,406x = 289,054 × 289,054
  4. Step 4: Simplify right side
    131,406x = 83,552,214,916
  5. Step 5: Solve for x
    x = 83,552,214,916/131,406
  6. Step 6: Final answer
    x = 635,832.57

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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.