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Finding the Fourth Proportional to 298,640.40, 446,664.60 and 267,277.20

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Solution

The fourth proportional to 298,640.40, 446,664.60 and 267,277.20 is: 399,755.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,640.40 : 446,664.60 = 267,277.20 : x
  2. Step 2: Convert to fraction form
    298,640.40/446,664.60 = 267,277.20/x
  3. Step 3: Cross multiply
    298,640.40x = 446,664.60 × 267,277.20
  4. Step 4: Simplify right side
    298,640.40x = 119,383,263,627.12
  5. Step 5: Solve for x
    x = 119,383,263,627.12/298,640.40
  6. Step 6: Final answer
    x = 399,755.91

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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.