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Finding the Fourth Proportional to 275,144.76, 379,715.58 and 154,324.80

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Solution

The fourth proportional to 275,144.76, 379,715.58 and 154,324.80 is: 212,977.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,144.76 : 379,715.58 = 154,324.80 : x
  2. Step 2: Convert to fraction form
    275,144.76/379,715.58 = 154,324.80/x
  3. Step 3: Cross multiply
    275,144.76x = 379,715.58 × 154,324.80
  4. Step 4: Simplify right side
    275,144.76x = 58,599,530,940.38
  5. Step 5: Solve for x
    x = 58,599,530,940.38/275,144.76
  6. Step 6: Final answer
    x = 212,977.09

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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.