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Finding the Fourth Proportional to 275,233.51, 379,791.87 and 154,349.92

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Solution

The fourth proportional to 275,233.51, 379,791.87 and 154,349.92 is: 212,985.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,233.51 : 379,791.87 = 154,349.92 : x
  2. Step 2: Convert to fraction form
    275,233.51/379,791.87 = 154,349.92/x
  3. Step 3: Cross multiply
    275,233.51x = 379,791.87 × 154,349.92
  4. Step 4: Simplify right side
    275,233.51x = 58,620,844,751.15
  5. Step 5: Solve for x
    x = 58,620,844,751.15/275,233.51
  6. Step 6: Final answer
    x = 212,985.86

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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.