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Finding the Fourth Proportional to 321,133.60, 481,239.60 and 236,231.20

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Solution

The fourth proportional to 321,133.60, 481,239.60 and 236,231.20 is: 354,007.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,133.60 : 481,239.60 = 236,231.20 : x
  2. Step 2: Convert to fraction form
    321,133.60/481,239.60 = 236,231.20/x
  3. Step 3: Cross multiply
    321,133.60x = 481,239.60 × 236,231.20
  4. Step 4: Simplify right side
    321,133.60x = 113,683,808,195.52
  5. Step 5: Solve for x
    x = 113,683,808,195.52/321,133.60
  6. Step 6: Final answer
    x = 354,007.83

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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.