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Finding the Fourth Proportional to 329,884.60, 494,729.70 and 130,138.60

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Solution

The fourth proportional to 329,884.60, 494,729.70 and 130,138.60 is: 195,169.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,884.60 : 494,729.70 = 130,138.60 : x
  2. Step 2: Convert to fraction form
    329,884.60/494,729.70 = 130,138.60/x
  3. Step 3: Cross multiply
    329,884.60x = 494,729.70 × 130,138.60
  4. Step 4: Simplify right side
    329,884.60x = 64,383,430,536.42
  5. Step 5: Solve for x
    x = 64,383,430,536.42/329,884.60
  6. Step 6: Final answer
    x = 195,169.55

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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.