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Finding the Fourth Proportional to 221,092.40, 331,638.60 and 80,951.60

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Solution

The fourth proportional to 221,092.40, 331,638.60 and 80,951.60 is: 121,427.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,092.40 : 331,638.60 = 80,951.60 : x
  2. Step 2: Convert to fraction form
    221,092.40/331,638.60 = 80,951.60/x
  3. Step 3: Cross multiply
    221,092.40x = 331,638.60 × 80,951.60
  4. Step 4: Simplify right side
    221,092.40x = 26,846,675,291.76
  5. Step 5: Solve for x
    x = 26,846,675,291.76/221,092.40
  6. Step 6: Final answer
    x = 121,427.40

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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.