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Finding the Fourth Proportional to 322,880.48, 484,282.90 and 86,241.61

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Solution

The fourth proportional to 322,880.48, 484,282.90 and 86,241.61 is: 129,352.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,880.48 : 484,282.90 = 86,241.61 : x
  2. Step 2: Convert to fraction form
    322,880.48/484,282.90 = 86,241.61/x
  3. Step 3: Cross multiply
    322,880.48x = 484,282.90 × 86,241.61
  4. Step 4: Simplify right side
    322,880.48x = 41,765,337,704.62
  5. Step 5: Solve for x
    x = 41,765,337,704.62/322,880.48
  6. Step 6: Final answer
    x = 129,352.32

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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.