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Finding the Fourth Proportional to 488,689.80, 733,107.60 and 173,121.90

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Solution

The fourth proportional to 488,689.80, 733,107.60 and 173,121.90 is: 259,708.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,689.80 : 733,107.60 = 173,121.90 : x
  2. Step 2: Convert to fraction form
    488,689.80/733,107.60 = 173,121.90/x
  3. Step 3: Cross multiply
    488,689.80x = 733,107.60 × 173,121.90
  4. Step 4: Simplify right side
    488,689.80x = 126,916,980,616.44
  5. Step 5: Solve for x
    x = 126,916,980,616.44/488,689.80
  6. Step 6: Final answer
    x = 259,708.68

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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.