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Finding the Fourth Proportional to 329,446.81, 494,293.22 and 129,906.28

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Solution

The fourth proportional to 329,446.81, 494,293.22 and 129,906.28 is: 194,907.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,446.81 : 494,293.22 = 129,906.28 : x
  2. Step 2: Convert to fraction form
    329,446.81/494,293.22 = 129,906.28/x
  3. Step 3: Cross multiply
    329,446.81x = 494,293.22 × 129,906.28
  4. Step 4: Simplify right side
    329,446.81x = 64,211,793,894.91
  5. Step 5: Solve for x
    x = 64,211,793,894.91/329,446.81
  6. Step 6: Final answer
    x = 194,907.92

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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.