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Finding the Fourth Proportional to 361,092.39, 498,272.76 and 215,869.47

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Solution

The fourth proportional to 361,092.39, 498,272.76 and 215,869.47 is: 297,879.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,092.39 : 498,272.76 = 215,869.47 : x
  2. Step 2: Convert to fraction form
    361,092.39/498,272.76 = 215,869.47/x
  3. Step 3: Cross multiply
    361,092.39x = 498,272.76 × 215,869.47
  4. Step 4: Simplify right side
    361,092.39x = 107,561,876,616.64
  5. Step 5: Solve for x
    x = 107,561,876,616.64/361,092.39
  6. Step 6: Final answer
    x = 297,879.10

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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.