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Finding the Fourth Proportional to 394,246.40, 591,369.60 and 113,772.80

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Solution

The fourth proportional to 394,246.40, 591,369.60 and 113,772.80 is: 170,659.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,246.40 : 591,369.60 = 113,772.80 : x
  2. Step 2: Convert to fraction form
    394,246.40/591,369.60 = 113,772.80/x
  3. Step 3: Cross multiply
    394,246.40x = 591,369.60 × 113,772.80
  4. Step 4: Simplify right side
    394,246.40x = 67,281,775,226.88
  5. Step 5: Solve for x
    x = 67,281,775,226.88/394,246.40
  6. Step 6: Final answer
    x = 170,659.20

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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.