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Finding the Fourth Proportional to 208,809.85, 313,260.94 and 88,860.49

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Solution

The fourth proportional to 208,809.85, 313,260.94 and 88,860.49 is: 133,310.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,809.85 : 313,260.94 = 88,860.49 : x
  2. Step 2: Convert to fraction form
    208,809.85/313,260.94 = 88,860.49/x
  3. Step 3: Cross multiply
    208,809.85x = 313,260.94 × 88,860.49
  4. Step 4: Simplify right side
    208,809.85x = 27,836,519,620.96
  5. Step 5: Solve for x
    x = 27,836,519,620.96/208,809.85
  6. Step 6: Final answer
    x = 133,310.38

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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.