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Finding the Fourth Proportional to 218,793.60, 328,190.40 and 52,581.60

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Solution

The fourth proportional to 218,793.60, 328,190.40 and 52,581.60 is: 78,872.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,793.60 : 328,190.40 = 52,581.60 : x
  2. Step 2: Convert to fraction form
    218,793.60/328,190.40 = 52,581.60/x
  3. Step 3: Cross multiply
    218,793.60x = 328,190.40 × 52,581.60
  4. Step 4: Simplify right side
    218,793.60x = 17,256,776,336.64
  5. Step 5: Solve for x
    x = 17,256,776,336.64/218,793.60
  6. Step 6: Final answer
    x = 78,872.40

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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.