Home / 257,251.11-355,065.60-171,213.78

Finding the Fourth Proportional to 257,251.11, 355,065.60 and 171,213.78

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Solution

The fourth proportional to 257,251.11, 355,065.60 and 171,213.78 is: 236,314.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,251.11 : 355,065.60 = 171,213.78 : x
  2. Step 2: Convert to fraction form
    257,251.11/355,065.60 = 171,213.78/x
  3. Step 3: Cross multiply
    257,251.11x = 355,065.60 × 171,213.78
  4. Step 4: Simplify right side
    257,251.11x = 60,792,122,020.11
  5. Step 5: Solve for x
    x = 60,792,122,020.11/257,251.11
  6. Step 6: Final answer
    x = 236,314.32

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1.5x scale

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.