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Finding the Fourth Proportional to 329,648.67, 494,139.53 and 129,891.39

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Solution

The fourth proportional to 329,648.67, 494,139.53 and 129,891.39 is: 194,705.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,648.67 : 494,139.53 = 129,891.39 : x
  2. Step 2: Convert to fraction form
    329,648.67/494,139.53 = 129,891.39/x
  3. Step 3: Cross multiply
    329,648.67x = 494,139.53 × 129,891.39
  4. Step 4: Simplify right side
    329,648.67x = 64,184,469,756.19
  5. Step 5: Solve for x
    x = 64,184,469,756.19/329,648.67
  6. Step 6: Final answer
    x = 194,705.68

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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.