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Finding the Fourth Proportional to 275,278.92, 379,861.02 and 154,401

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Solution

The fourth proportional to 275,278.92, 379,861.02 and 154,401 is: 213,059.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,278.92 : 379,861.02 = 154,401 : x
  2. Step 2: Convert to fraction form
    275,278.92/379,861.02 = 154,401/x
  3. Step 3: Cross multiply
    275,278.92x = 379,861.02 × 154,401
  4. Step 4: Simplify right side
    275,278.92x = 58,650,921,349.02
  5. Step 5: Solve for x
    x = 58,650,921,349.02/275,278.92
  6. Step 6: Final answer
    x = 213,059.98

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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.