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Finding the Fourth Proportional to 383,906.40, 575,600.40 and 204,021.60

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Solution

The fourth proportional to 383,906.40, 575,600.40 and 204,021.60 is: 305,894.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,906.40 : 575,600.40 = 204,021.60 : x
  2. Step 2: Convert to fraction form
    383,906.40/575,600.40 = 204,021.60/x
  3. Step 3: Cross multiply
    383,906.40x = 575,600.40 × 204,021.60
  4. Step 4: Simplify right side
    383,906.40x = 117,434,914,568.64
  5. Step 5: Solve for x
    x = 117,434,914,568.64/383,906.40
  6. Step 6: Final answer
    x = 305,894.65

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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.