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Finding the Fourth Proportional to 275,513.30, 412,481.55 and 169,619.30

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Solution

The fourth proportional to 275,513.30, 412,481.55 and 169,619.30 is: 253,943.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,513.30 : 412,481.55 = 169,619.30 : x
  2. Step 2: Convert to fraction form
    275,513.30/412,481.55 = 169,619.30/x
  3. Step 3: Cross multiply
    275,513.30x = 412,481.55 × 169,619.30
  4. Step 4: Simplify right side
    275,513.30x = 69,964,831,773.92
  5. Step 5: Solve for x
    x = 69,964,831,773.92/275,513.30
  6. Step 6: Final answer
    x = 253,943.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.