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Finding the Fourth Proportional to 275,579.72, 380,296.68 and 154,718

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Solution

The fourth proportional to 275,579.72, 380,296.68 and 154,718 is: 213,508.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,579.72 : 380,296.68 = 154,718 : x
  2. Step 2: Convert to fraction form
    275,579.72/380,296.68 = 154,718/x
  3. Step 3: Cross multiply
    275,579.72x = 380,296.68 × 154,718
  4. Step 4: Simplify right side
    275,579.72x = 58,838,741,736.24
  5. Step 5: Solve for x
    x = 58,838,741,736.24/275,579.72
  6. Step 6: Final answer
    x = 213,508.97

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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.