Home / 259,940.20-389,910.30-171,293.80

Finding the Fourth Proportional to 259,940.20, 389,910.30 and 171,293.80

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Solution

The fourth proportional to 259,940.20, 389,910.30 and 171,293.80 is: 256,940.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,940.20 : 389,910.30 = 171,293.80 : x
  2. Step 2: Convert to fraction form
    259,940.20/389,910.30 = 171,293.80/x
  3. Step 3: Cross multiply
    259,940.20x = 389,910.30 × 171,293.80
  4. Step 4: Simplify right side
    259,940.20x = 66,789,216,946.14
  5. Step 5: Solve for x
    x = 66,789,216,946.14/259,940.20
  6. Step 6: Final answer
    x = 256,940.70

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1.5x scale

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.