Home / 383,890.37-529,938.60-247,990.55

Finding the Fourth Proportional to 383,890.37, 529,938.60 and 247,990.55

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Solution

The fourth proportional to 383,890.37, 529,938.60 and 247,990.55 is: 342,336.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,890.37 : 529,938.60 = 247,990.55 : x
  2. Step 2: Convert to fraction form
    383,890.37/529,938.60 = 247,990.55/x
  3. Step 3: Cross multiply
    383,890.37x = 529,938.60 × 247,990.55
  4. Step 4: Simplify right side
    383,890.37x = 131,419,764,880.23
  5. Step 5: Solve for x
    x = 131,419,764,880.23/383,890.37
  6. Step 6: Final answer
    x = 342,336.71

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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.