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Finding the Fourth Proportional to 286,766.72, 395,760.24 and 172,049.68

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Solution

The fourth proportional to 286,766.72, 395,760.24 and 172,049.68 is: 237,441.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,766.72 : 395,760.24 = 172,049.68 : x
  2. Step 2: Convert to fraction form
    286,766.72/395,760.24 = 172,049.68/x
  3. Step 3: Cross multiply
    286,766.72x = 395,760.24 × 172,049.68
  4. Step 4: Simplify right side
    286,766.72x = 68,090,422,648.72
  5. Step 5: Solve for x
    x = 68,090,422,648.72/286,766.72
  6. Step 6: Final answer
    x = 237,441.86

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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.