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Finding the Third Proportional to 256,467 and 556,401

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Solution

The third proportional to 256,467 and 556,401 is: 1,207,102.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,467 : 556,401 = 556,401 : x
  2. Step 2: Convert to fraction form
    256,467/556,401 = 556,401/x
  3. Step 3: Cross multiply
    256,467x = 556,401 × 556,401
  4. Step 4: Simplify right side
    256,467x = 309,582,072,801
  5. Step 5: Solve for x
    x = 309,582,072,801/256,467
  6. Step 6: Final answer
    x = 1,207,102.95

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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.