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Finding the Fourth Proportional to 275,616.34, 380,372.61 and 154,765.66

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Solution

The fourth proportional to 275,616.34, 380,372.61 and 154,765.66 is: 213,589.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,616.34 : 380,372.61 = 154,765.66 : x
  2. Step 2: Convert to fraction form
    275,616.34/380,372.61 = 154,765.66/x
  3. Step 3: Cross multiply
    275,616.34x = 380,372.61 × 154,765.66
  4. Step 4: Simplify right side
    275,616.34x = 58,868,618,032.57
  5. Step 5: Solve for x
    x = 58,868,618,032.57/275,616.34
  6. Step 6: Final answer
    x = 213,589.00

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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.