Home / 318,627.06-439,481.39-209,696.70

Finding the Fourth Proportional to 318,627.06, 439,481.39 and 209,696.70

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Solution

The fourth proportional to 318,627.06, 439,481.39 and 209,696.70 is: 289,234.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,627.06 : 439,481.39 = 209,696.70 : x
  2. Step 2: Convert to fraction form
    318,627.06/439,481.39 = 209,696.70/x
  3. Step 3: Cross multiply
    318,627.06x = 439,481.39 × 209,696.70
  4. Step 4: Simplify right side
    318,627.06x = 92,157,797,194.41
  5. Step 5: Solve for x
    x = 92,157,797,194.41/318,627.06
  6. Step 6: Final answer
    x = 289,234.06

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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.