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Finding the Fourth Proportional to 259,862.80, 389,333.40 and 161,251.60

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Solution

The fourth proportional to 259,862.80, 389,333.40 and 161,251.60 is: 241,591.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,862.80 : 389,333.40 = 161,251.60 : x
  2. Step 2: Convert to fraction form
    259,862.80/389,333.40 = 161,251.60/x
  3. Step 3: Cross multiply
    259,862.80x = 389,333.40 × 161,251.60
  4. Step 4: Simplify right side
    259,862.80x = 62,780,633,683.44
  5. Step 5: Solve for x
    x = 62,780,633,683.44/259,862.80
  6. Step 6: Final answer
    x = 241,591.46

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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.