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Finding the Fourth Proportional to 394,269.60, 591,339.60 and 109,979.58

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Solution

The fourth proportional to 394,269.60, 591,339.60 and 109,979.58 is: 164,951.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,269.60 : 591,339.60 = 109,979.58 : x
  2. Step 2: Convert to fraction form
    394,269.60/591,339.60 = 109,979.58/x
  3. Step 3: Cross multiply
    394,269.60x = 591,339.60 × 109,979.58
  4. Step 4: Simplify right side
    394,269.60x = 65,035,280,845.37
  5. Step 5: Solve for x
    x = 65,035,280,845.37/394,269.60
  6. Step 6: Final answer
    x = 164,951.29

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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.