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Finding the Fourth Proportional to 371,760.20, 557,640.30 and 267,561.80

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Solution

The fourth proportional to 371,760.20, 557,640.30 and 267,561.80 is: 401,342.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,760.20 : 557,640.30 = 267,561.80 : x
  2. Step 2: Convert to fraction form
    371,760.20/557,640.30 = 267,561.80/x
  3. Step 3: Cross multiply
    371,760.20x = 557,640.30 × 267,561.80
  4. Step 4: Simplify right side
    371,760.20x = 149,203,242,420.54
  5. Step 5: Solve for x
    x = 149,203,242,420.54/371,760.20
  6. Step 6: Final answer
    x = 401,342.70

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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.