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Finding the Fourth Proportional to 275,355.06, 379,974.69 and 154,485.24

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Solution

The fourth proportional to 275,355.06, 379,974.69 and 154,485.24 is: 213,181.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,355.06 : 379,974.69 = 154,485.24 : x
  2. Step 2: Convert to fraction form
    275,355.06/379,974.69 = 154,485.24/x
  3. Step 3: Cross multiply
    275,355.06x = 379,974.69 × 154,485.24
  4. Step 4: Simplify right side
    275,355.06x = 58,700,481,178.58
  5. Step 5: Solve for x
    x = 58,700,481,178.58/275,355.06
  6. Step 6: Final answer
    x = 213,181.05

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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.