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Finding the Fourth Proportional to 221,057.60, 331,586.40 and 54,845.60

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Solution

The fourth proportional to 221,057.60, 331,586.40 and 54,845.60 is: 82,268.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,057.60 : 331,586.40 = 54,845.60 : x
  2. Step 2: Convert to fraction form
    221,057.60/331,586.40 = 54,845.60/x
  3. Step 3: Cross multiply
    221,057.60x = 331,586.40 × 54,845.60
  4. Step 4: Simplify right side
    221,057.60x = 18,186,055,059.84
  5. Step 5: Solve for x
    x = 18,186,055,059.84/221,057.60
  6. Step 6: Final answer
    x = 82,268.40

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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.