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Finding the Fourth Proportional to 275,231.01, 379,788.43 and 154,347.42

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Solution

The fourth proportional to 275,231.01, 379,788.43 and 154,347.42 is: 212,982.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,231.01 : 379,788.43 = 154,347.42 : x
  2. Step 2: Convert to fraction form
    275,231.01/379,788.43 = 154,347.42/x
  3. Step 3: Cross multiply
    275,231.01x = 379,788.43 × 154,347.42
  4. Step 4: Simplify right side
    275,231.01x = 58,619,363,544.61
  5. Step 5: Solve for x
    x = 58,619,363,544.61/275,231.01
  6. Step 6: Final answer
    x = 212,982.41

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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.