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Finding the Fourth Proportional to 275,243.12, 379,745.78 and 160,495.80

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Solution

The fourth proportional to 275,243.12, 379,745.78 and 160,495.80 is: 221,431.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,243.12 : 379,745.78 = 160,495.80 : x
  2. Step 2: Convert to fraction form
    275,243.12/379,745.78 = 160,495.80/x
  3. Step 3: Cross multiply
    275,243.12x = 379,745.78 × 160,495.80
  4. Step 4: Simplify right side
    275,243.12x = 60,947,602,757.72
  5. Step 5: Solve for x
    x = 60,947,602,757.72/275,243.12
  6. Step 6: Final answer
    x = 221,431.88

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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.