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Finding the Fourth Proportional to 275,461.92, 380,137.46 and 154,603.21

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Solution

The fourth proportional to 275,461.92, 380,137.46 and 154,603.21 is: 213,352.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,461.92 : 380,137.46 = 154,603.21 : x
  2. Step 2: Convert to fraction form
    275,461.92/380,137.46 = 154,603.21/x
  3. Step 3: Cross multiply
    275,461.92x = 380,137.46 × 154,603.21
  4. Step 4: Simplify right side
    275,461.92x = 58,770,468,883.54
  5. Step 5: Solve for x
    x = 58,770,468,883.54/275,461.92
  6. Step 6: Final answer
    x = 213,352.43

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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.