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Finding the Fourth Proportional to 275,266.78, 379,910.73 and 154,456.90

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Solution

The fourth proportional to 275,266.78, 379,910.73 and 154,456.90 is: 213,174.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,266.78 : 379,910.73 = 154,456.90 : x
  2. Step 2: Convert to fraction form
    275,266.78/379,910.73 = 154,456.90/x
  3. Step 3: Cross multiply
    275,266.78x = 379,910.73 × 154,456.90
  4. Step 4: Simplify right side
    275,266.78x = 58,679,833,632.54
  5. Step 5: Solve for x
    x = 58,679,833,632.54/275,266.78
  6. Step 6: Final answer
    x = 213,174.41

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1.5x scale

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.