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Finding the Fourth Proportional to 221,431.60, 332,147.40 and 88,243.30

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Solution

The fourth proportional to 221,431.60, 332,147.40 and 88,243.30 is: 132,364.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,431.60 : 332,147.40 = 88,243.30 : x
  2. Step 2: Convert to fraction form
    221,431.60/332,147.40 = 88,243.30/x
  3. Step 3: Cross multiply
    221,431.60x = 332,147.40 × 88,243.30
  4. Step 4: Simplify right side
    221,431.60x = 29,309,782,662.42
  5. Step 5: Solve for x
    x = 29,309,782,662.42/221,431.60
  6. Step 6: Final answer
    x = 132,364.95

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1.5x scale

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.