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Finding the Fourth Proportional to 321,137.60, 481,245.60 and 236,235.20

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Solution

The fourth proportional to 321,137.60, 481,245.60 and 236,235.20 is: 354,013.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,137.60 : 481,245.60 = 236,235.20 : x
  2. Step 2: Convert to fraction form
    321,137.60/481,245.60 = 236,235.20/x
  3. Step 3: Cross multiply
    321,137.60x = 481,245.60 × 236,235.20
  4. Step 4: Simplify right side
    321,137.60x = 113,687,150,565.12
  5. Step 5: Solve for x
    x = 113,687,150,565.12/321,137.60
  6. Step 6: Final answer
    x = 354,013.83

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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.