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Finding the Fourth Proportional to 287,245.59, 396,414.62 and 159,918.39

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Solution

The fourth proportional to 287,245.59, 396,414.62 and 159,918.39 is: 220,696.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,245.59 : 396,414.62 = 159,918.39 : x
  2. Step 2: Convert to fraction form
    287,245.59/396,414.62 = 159,918.39/x
  3. Step 3: Cross multiply
    287,245.59x = 396,414.62 × 159,918.39
  4. Step 4: Simplify right side
    287,245.59x = 63,393,987,003.27
  5. Step 5: Solve for x
    x = 63,393,987,003.27/287,245.59
  6. Step 6: Final answer
    x = 220,696.12

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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.