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Finding the Fourth Proportional to 355,512.10, 533,268.15 and 261,033.70

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Solution

The fourth proportional to 355,512.10, 533,268.15 and 261,033.70 is: 391,550.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,512.10 : 533,268.15 = 261,033.70 : x
  2. Step 2: Convert to fraction form
    355,512.10/533,268.15 = 261,033.70/x
  3. Step 3: Cross multiply
    355,512.10x = 533,268.15 × 261,033.70
  4. Step 4: Simplify right side
    355,512.10x = 139,200,958,286.66
  5. Step 5: Solve for x
    x = 139,200,958,286.66/355,512.10
  6. Step 6: Final answer
    x = 391,550.55

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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.