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Finding the Fourth Proportional to 320,880.60, 481,283.84 and 84,241.80

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Solution

The fourth proportional to 320,880.60, 481,283.84 and 84,241.80 is: 126,352.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,880.60 : 481,283.84 = 84,241.80 : x
  2. Step 2: Convert to fraction form
    320,880.60/481,283.84 = 84,241.80/x
  3. Step 3: Cross multiply
    320,880.60x = 481,283.84 × 84,241.80
  4. Step 4: Simplify right side
    320,880.60x = 40,544,217,203.12
  5. Step 5: Solve for x
    x = 40,544,217,203.12/320,880.60
  6. Step 6: Final answer
    x = 126,352.97

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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.