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Finding the Third Proportional to 256,824 and 551,880

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Solution

The third proportional to 256,824 and 551,880 is: 1,185,915.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,824 : 551,880 = 551,880 : x
  2. Step 2: Convert to fraction form
    256,824/551,880 = 551,880/x
  3. Step 3: Cross multiply
    256,824x = 551,880 × 551,880
  4. Step 4: Simplify right side
    256,824x = 304,571,534,400
  5. Step 5: Solve for x
    x = 304,571,534,400/256,824
  6. Step 6: Final answer
    x = 1,185,915.39

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.