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Finding the Fourth Proportional to 329,644.05, 494,129.82 and 129,883.47

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Solution

The fourth proportional to 329,644.05, 494,129.82 and 129,883.47 is: 194,692.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,644.05 : 494,129.82 = 129,883.47 : x
  2. Step 2: Convert to fraction form
    329,644.05/494,129.82 = 129,883.47/x
  3. Step 3: Cross multiply
    329,644.05x = 494,129.82 × 129,883.47
  4. Step 4: Simplify right side
    329,644.05x = 64,179,295,652.08
  5. Step 5: Solve for x
    x = 64,179,295,652.08/329,644.05
  6. Step 6: Final answer
    x = 194,692.72

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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.