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Finding the Fourth Proportional to 275,770.63, 380,601.78 and 154,921.11

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Solution

The fourth proportional to 275,770.63, 380,601.78 and 154,921.11 is: 213,812.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,770.63 : 380,601.78 = 154,921.11 : x
  2. Step 2: Convert to fraction form
    275,770.63/380,601.78 = 154,921.11/x
  3. Step 3: Cross multiply
    275,770.63x = 380,601.78 × 154,921.11
  4. Step 4: Simplify right side
    275,770.63x = 58,963,252,191.20
  5. Step 5: Solve for x
    x = 58,963,252,191.20/275,770.63
  6. Step 6: Final answer
    x = 213,812.66

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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.