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Finding the Fourth Proportional to 221,979,725.60, 332,969,588.40 and 218,153,350.40

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Solution

The fourth proportional to 221,979,725.60, 332,969,588.40 and 218,153,350.40 is: 327,230,025.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,979,725.60 : 332,969,588.40 = 218,153,350.40 : x
  2. Step 2: Convert to fraction form
    221,979,725.60/332,969,588.40 = 218,153,350.40/x
  3. Step 3: Cross multiply
    221,979,725.60x = 332,969,588.40 × 218,153,350.40
  4. Step 4: Simplify right side
    221,979,725.60x = 72,638,431,290,768,976
  5. Step 5: Solve for x
    x = 72,638,431,290,768,976/221,979,725.60
  6. Step 6: Final answer
    x = 327,230,025.60

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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.