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Finding the Third Proportional to 256,406 and 561,070

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Solution

The third proportional to 256,406 and 561,070 is: 1,227,738.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,406 : 561,070 = 561,070 : x
  2. Step 2: Convert to fraction form
    256,406/561,070 = 561,070/x
  3. Step 3: Cross multiply
    256,406x = 561,070 × 561,070
  4. Step 4: Simplify right side
    256,406x = 314,799,544,900
  5. Step 5: Solve for x
    x = 314,799,544,900/256,406
  6. Step 6: Final answer
    x = 1,227,738.61

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.