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Finding the Fourth Proportional to 275,811.88, 380,626.16 and 154,960.95

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Solution

The fourth proportional to 275,811.88, 380,626.16 and 154,960.95 is: 213,849.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,811.88 : 380,626.16 = 154,960.95 : x
  2. Step 2: Convert to fraction form
    275,811.88/380,626.16 = 154,960.95/x
  3. Step 3: Cross multiply
    275,811.88x = 380,626.16 × 154,960.95
  4. Step 4: Simplify right side
    275,811.88x = 58,982,192,973.94
  5. Step 5: Solve for x
    x = 58,982,192,973.94/275,811.88
  6. Step 6: Final answer
    x = 213,849.35

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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.