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Finding the Fourth Proportional to 204,279.39, 306,416.16 and 91,879.87

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Solution

The fourth proportional to 204,279.39, 306,416.16 and 91,879.87 is: 137,818.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,279.39 : 306,416.16 = 91,879.87 : x
  2. Step 2: Convert to fraction form
    204,279.39/306,416.16 = 91,879.87/x
  3. Step 3: Cross multiply
    204,279.39x = 306,416.16 × 91,879.87
  4. Step 4: Simplify right side
    204,279.39x = 28,153,476,946.70
  5. Step 5: Solve for x
    x = 28,153,476,946.70/204,279.39
  6. Step 6: Final answer
    x = 137,818.49

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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.