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Finding the Fourth Proportional to 221,042.40, 331,563.60 and 54,830.40

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Solution

The fourth proportional to 221,042.40, 331,563.60 and 54,830.40 is: 82,245.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,042.40 : 331,563.60 = 54,830.40 : x
  2. Step 2: Convert to fraction form
    221,042.40/331,563.60 = 54,830.40/x
  3. Step 3: Cross multiply
    221,042.40x = 331,563.60 × 54,830.40
  4. Step 4: Simplify right side
    221,042.40x = 18,179,764,813.44
  5. Step 5: Solve for x
    x = 18,179,764,813.44/221,042.40
  6. Step 6: Final answer
    x = 82,245.60

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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.