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Finding the Fourth Proportional to 275,544.31, 380,247.80 and 154,682.49

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Solution

The fourth proportional to 275,544.31, 380,247.80 and 154,682.49 is: 213,459.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,544.31 : 380,247.80 = 154,682.49 : x
  2. Step 2: Convert to fraction form
    275,544.31/380,247.80 = 154,682.49/x
  3. Step 3: Cross multiply
    275,544.31x = 380,247.80 × 154,682.49
  4. Step 4: Simplify right side
    275,544.31x = 58,817,675,487.85
  5. Step 5: Solve for x
    x = 58,817,675,487.85/275,544.31
  6. Step 6: Final answer
    x = 213,459.96

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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.