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Finding the Fourth Proportional to 255,542.40, 352,655.82 and 142,372.44

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Solution

The fourth proportional to 255,542.40, 352,655.82 and 142,372.44 is: 196,478.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,542.40 : 352,655.82 = 142,372.44 : x
  2. Step 2: Convert to fraction form
    255,542.40/352,655.82 = 142,372.44/x
  3. Step 3: Cross multiply
    255,542.40x = 352,655.82 × 142,372.44
  4. Step 4: Simplify right side
    255,542.40x = 50,208,469,573.60
  5. Step 5: Solve for x
    x = 50,208,469,573.60/255,542.40
  6. Step 6: Final answer
    x = 196,478.04

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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.