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Finding the Fourth Proportional to 383,918.40, 575,618.40 and 204,033.60

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Solution

The fourth proportional to 383,918.40, 575,618.40 and 204,033.60 is: 305,912.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,918.40 : 575,618.40 = 204,033.60 : x
  2. Step 2: Convert to fraction form
    383,918.40/575,618.40 = 204,033.60/x
  3. Step 3: Cross multiply
    383,918.40x = 575,618.40 × 204,033.60
  4. Step 4: Simplify right side
    383,918.40x = 117,445,494,378.24
  5. Step 5: Solve for x
    x = 117,445,494,378.24/383,918.40
  6. Step 6: Final answer
    x = 305,912.65

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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.