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Finding the Fourth Proportional to 171,940.40, 257,910.60 and 53,610.80

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Solution

The fourth proportional to 171,940.40, 257,910.60 and 53,610.80 is: 80,416.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,940.40 : 257,910.60 = 53,610.80 : x
  2. Step 2: Convert to fraction form
    171,940.40/257,910.60 = 53,610.80/x
  3. Step 3: Cross multiply
    171,940.40x = 257,910.60 × 53,610.80
  4. Step 4: Simplify right side
    171,940.40x = 13,826,793,594.48
  5. Step 5: Solve for x
    x = 13,826,793,594.48/171,940.40
  6. Step 6: Final answer
    x = 80,416.20

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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.