Home / 259,760.20-389,640.30-171,113.80

Finding the Fourth Proportional to 259,760.20, 389,640.30 and 171,113.80

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Solution

The fourth proportional to 259,760.20, 389,640.30 and 171,113.80 is: 256,670.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,760.20 : 389,640.30 = 171,113.80 : x
  2. Step 2: Convert to fraction form
    259,760.20/389,640.30 = 171,113.80/x
  3. Step 3: Cross multiply
    259,760.20x = 389,640.30 × 171,113.80
  4. Step 4: Simplify right side
    259,760.20x = 66,672,832,366.14
  5. Step 5: Solve for x
    x = 66,672,832,366.14/259,760.20
  6. Step 6: Final answer
    x = 256,670.70

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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.