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Finding the Fourth Proportional to 218,793.60, 328,190.40 and 204,031.35

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Solution

The fourth proportional to 218,793.60, 328,190.40 and 204,031.35 is: 306,047.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,793.60 : 328,190.40 = 204,031.35 : x
  2. Step 2: Convert to fraction form
    218,793.60/328,190.40 = 204,031.35/x
  3. Step 3: Cross multiply
    218,793.60x = 328,190.40 × 204,031.35
  4. Step 4: Simplify right side
    218,793.60x = 66,961,130,369.04
  5. Step 5: Solve for x
    x = 66,961,130,369.04/218,793.60
  6. Step 6: Final answer
    x = 306,047.03

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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.