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Finding the Fourth Proportional to 275,438.11, 380,112.13 and 154,586.88

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Solution

The fourth proportional to 275,438.11, 380,112.13 and 154,586.88 is: 213,334.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,438.11 : 380,112.13 = 154,586.88 : x
  2. Step 2: Convert to fraction form
    275,438.11/380,112.13 = 154,586.88/x
  3. Step 3: Cross multiply
    275,438.11x = 380,112.13 × 154,586.88
  4. Step 4: Simplify right side
    275,438.11x = 58,760,348,226.85
  5. Step 5: Solve for x
    x = 58,760,348,226.85/275,438.11
  6. Step 6: Final answer
    x = 213,334.13

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1.5x scale

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.