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Finding the Fourth Proportional to 287,573.65, 396,804.99 and 166,691.35

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Solution

The fourth proportional to 287,573.65, 396,804.99 and 166,691.35 is: 230,007.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,573.65 : 396,804.99 = 166,691.35 : x
  2. Step 2: Convert to fraction form
    287,573.65/396,804.99 = 166,691.35/x
  3. Step 3: Cross multiply
    287,573.65x = 396,804.99 × 166,691.35
  4. Step 4: Simplify right side
    287,573.65x = 66,143,959,469.84
  5. Step 5: Solve for x
    x = 66,143,959,469.84/287,573.65
  6. Step 6: Final answer
    x = 230,007.02

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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.