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Finding the Fourth Proportional to 551,339.58, 827,124.17 and 172,245

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Solution

The fourth proportional to 551,339.58, 827,124.17 and 172,245 is: 258,403.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,339.58 : 827,124.17 = 172,245 : x
  2. Step 2: Convert to fraction form
    551,339.58/827,124.17 = 172,245/x
  3. Step 3: Cross multiply
    551,339.58x = 827,124.17 × 172,245
  4. Step 4: Simplify right side
    551,339.58x = 142,468,002,661.65
  5. Step 5: Solve for x
    x = 142,468,002,661.65/551,339.58
  6. Step 6: Final answer
    x = 258,403.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.