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Finding the Third Proportional to 276,129 and 436,446

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Solution

The third proportional to 276,129 and 436,446 is: 689,841.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,129 : 436,446 = 436,446 : x
  2. Step 2: Convert to fraction form
    276,129/436,446 = 436,446/x
  3. Step 3: Cross multiply
    276,129x = 436,446 × 436,446
  4. Step 4: Simplify right side
    276,129x = 190,485,110,916
  5. Step 5: Solve for x
    x = 190,485,110,916/276,129
  6. Step 6: Final answer
    x = 689,841.02

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.