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Finding the Fourth Proportional to 501,270.10, 691,796.49 and 274,959.34

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Solution

The fourth proportional to 501,270.10, 691,796.49 and 274,959.34 is: 379,467.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,270.10 : 691,796.49 = 274,959.34 : x
  2. Step 2: Convert to fraction form
    501,270.10/691,796.49 = 274,959.34/x
  3. Step 3: Cross multiply
    501,270.10x = 691,796.49 × 274,959.34
  4. Step 4: Simplify right side
    501,270.10x = 190,215,904,929.92
  5. Step 5: Solve for x
    x = 190,215,904,929.92/501,270.10
  6. Step 6: Final answer
    x = 379,467.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.