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Finding the Fourth Proportional to 287,172.85, 396,269.91 and 166,352.95

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Solution

The fourth proportional to 287,172.85, 396,269.91 and 166,352.95 is: 229,550.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,172.85 : 396,269.91 = 166,352.95 : x
  2. Step 2: Convert to fraction form
    287,172.85/396,269.91 = 166,352.95/x
  3. Step 3: Cross multiply
    287,172.85x = 396,269.91 × 166,352.95
  4. Step 4: Simplify right side
    287,172.85x = 65,920,668,524.73
  5. Step 5: Solve for x
    x = 65,920,668,524.73/287,172.85
  6. Step 6: Final answer
    x = 229,550.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.