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Finding the Fourth Proportional to 218,748.60, 328,195.80 and 195,231.60

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Solution

The fourth proportional to 218,748.60, 328,195.80 and 195,231.60 is: 292,912.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,748.60 : 328,195.80 = 195,231.60 : x
  2. Step 2: Convert to fraction form
    218,748.60/328,195.80 = 195,231.60/x
  3. Step 3: Cross multiply
    218,748.60x = 328,195.80 × 195,231.60
  4. Step 4: Simplify right side
    218,748.60x = 64,074,191,147.28
  5. Step 5: Solve for x
    x = 64,074,191,147.28/218,748.60
  6. Step 6: Final answer
    x = 292,912.46

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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.