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Finding the Fourth Proportional to 221,092.40, 331,638.60 and 54,880.40

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Solution

The fourth proportional to 221,092.40, 331,638.60 and 54,880.40 is: 82,320.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,092.40 : 331,638.60 = 54,880.40 : x
  2. Step 2: Convert to fraction form
    221,092.40/331,638.60 = 54,880.40/x
  3. Step 3: Cross multiply
    221,092.40x = 331,638.60 × 54,880.40
  4. Step 4: Simplify right side
    221,092.40x = 18,200,459,023.44
  5. Step 5: Solve for x
    x = 18,200,459,023.44/221,092.40
  6. Step 6: Final answer
    x = 82,320.60

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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.