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Finding the Fourth Proportional to 352,379.54, 486,517.92 and 209,185.58

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Solution

The fourth proportional to 352,379.54, 486,517.92 and 209,185.58 is: 288,815.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,379.54 : 486,517.92 = 209,185.58 : x
  2. Step 2: Convert to fraction form
    352,379.54/486,517.92 = 209,185.58/x
  3. Step 3: Cross multiply
    352,379.54x = 486,517.92 × 209,185.58
  4. Step 4: Simplify right side
    352,379.54x = 101,772,533,275.59
  5. Step 5: Solve for x
    x = 101,772,533,275.59/352,379.54
  6. Step 6: Final answer
    x = 288,815.10

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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.