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Finding the Fourth Proportional to 329,607.40, 494,540.70 and 129,893.80

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Solution

The fourth proportional to 329,607.40, 494,540.70 and 129,893.80 is: 194,891.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,607.40 : 494,540.70 = 129,893.80 : x
  2. Step 2: Convert to fraction form
    329,607.40/494,540.70 = 129,893.80/x
  3. Step 3: Cross multiply
    329,607.40x = 494,540.70 × 129,893.80
  4. Step 4: Simplify right side
    329,607.40x = 64,237,770,777.66
  5. Step 5: Solve for x
    x = 64,237,770,777.66/329,607.40
  6. Step 6: Final answer
    x = 194,891.77

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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.