Home / 408,255.21-611,072.60-218,240.55

Finding the Fourth Proportional to 408,255.21, 611,072.60 and 218,240.55

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Solution

The fourth proportional to 408,255.21, 611,072.60 and 218,240.55 is: 326,660.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,255.21 : 611,072.60 = 218,240.55 : x
  2. Step 2: Convert to fraction form
    408,255.21/611,072.60 = 218,240.55/x
  3. Step 3: Cross multiply
    408,255.21x = 611,072.60 × 218,240.55
  4. Step 4: Simplify right side
    408,255.21x = 133,360,819,222.73
  5. Step 5: Solve for x
    x = 133,360,819,222.73/408,255.21
  6. Step 6: Final answer
    x = 326,660.42

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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.