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Finding the Third Proportional to 133,128 and 290,824

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Solution

The third proportional to 133,128 and 290,824 is: 635,317.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,128 : 290,824 = 290,824 : x
  2. Step 2: Convert to fraction form
    133,128/290,824 = 290,824/x
  3. Step 3: Cross multiply
    133,128x = 290,824 × 290,824
  4. Step 4: Simplify right side
    133,128x = 84,578,598,976
  5. Step 5: Solve for x
    x = 84,578,598,976/133,128
  6. Step 6: Final answer
    x = 635,317.88

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.