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Finding the Fourth Proportional to 275,906.77, 380,761.37 and 155,050.45

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Solution

The fourth proportional to 275,906.77, 380,761.37 and 155,050.45 is: 213,975.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,906.77 : 380,761.37 = 155,050.45 : x
  2. Step 2: Convert to fraction form
    275,906.77/380,761.37 = 155,050.45/x
  3. Step 3: Cross multiply
    275,906.77x = 380,761.37 × 155,050.45
  4. Step 4: Simplify right side
    275,906.77x = 59,037,221,761.12
  5. Step 5: Solve for x
    x = 59,037,221,761.12/275,906.77
  6. Step 6: Final answer
    x = 213,975.26

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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.