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Finding the Fourth Proportional to 394,330.40, 591,495.60 and 113,856.80

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Solution

The fourth proportional to 394,330.40, 591,495.60 and 113,856.80 is: 170,785.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,330.40 : 591,495.60 = 113,856.80 : x
  2. Step 2: Convert to fraction form
    394,330.40/591,495.60 = 113,856.80/x
  3. Step 3: Cross multiply
    394,330.40x = 591,495.60 × 113,856.80
  4. Step 4: Simplify right side
    394,330.40x = 67,345,796,230.08
  5. Step 5: Solve for x
    x = 67,345,796,230.08/394,330.40
  6. Step 6: Final answer
    x = 170,785.20

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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.