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Finding the Fourth Proportional to 287,187.62, 396,290.31 and 166,367.81

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Solution

The fourth proportional to 287,187.62, 396,290.31 and 166,367.81 is: 229,571.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,187.62 : 396,290.31 = 166,367.81 : x
  2. Step 2: Convert to fraction form
    287,187.62/396,290.31 = 166,367.81/x
  3. Step 3: Cross multiply
    287,187.62x = 396,290.31 × 166,367.81
  4. Step 4: Simplify right side
    287,187.62x = 65,929,949,017.47
  5. Step 5: Solve for x
    x = 65,929,949,017.47/287,187.62
  6. Step 6: Final answer
    x = 229,571.00

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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.