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Finding the Fourth Proportional to 275,631.30, 380,344.73 and 154,744.88

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Solution

The fourth proportional to 275,631.30, 380,344.73 and 154,744.88 is: 213,533.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,631.30 : 380,344.73 = 154,744.88 : x
  2. Step 2: Convert to fraction form
    275,631.30/380,344.73 = 154,744.88/x
  3. Step 3: Cross multiply
    275,631.30x = 380,344.73 × 154,744.88
  4. Step 4: Simplify right side
    275,631.30x = 58,856,396,927.03
  5. Step 5: Solve for x
    x = 58,856,396,927.03/275,631.30
  6. Step 6: Final answer
    x = 213,533.07

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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.