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Finding the Fourth Proportional to 274,705.86, 379,076.05 and 153,819.44

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Solution

The fourth proportional to 274,705.86, 379,076.05 and 153,819.44 is: 212,260.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,705.86 : 379,076.05 = 153,819.44 : x
  2. Step 2: Convert to fraction form
    274,705.86/379,076.05 = 153,819.44/x
  3. Step 3: Cross multiply
    274,705.86x = 379,076.05 × 153,819.44
  4. Step 4: Simplify right side
    274,705.86x = 58,309,265,728.41
  5. Step 5: Solve for x
    x = 58,309,265,728.41/274,705.86
  6. Step 6: Final answer
    x = 212,260.73

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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.