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Finding the Fourth Proportional to 287,467.65, 396,700.37 and 166,620.18

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Solution

The fourth proportional to 287,467.65, 396,700.37 and 166,620.18 is: 229,932.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,467.65 : 396,700.37 = 166,620.18 : x
  2. Step 2: Convert to fraction form
    287,467.65/396,700.37 = 166,620.18/x
  3. Step 3: Cross multiply
    287,467.65x = 396,700.37 × 166,620.18
  4. Step 4: Simplify right side
    287,467.65x = 66,098,287,055.47
  5. Step 5: Solve for x
    x = 66,098,287,055.47/287,467.65
  6. Step 6: Final answer
    x = 229,932.96

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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.