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Finding the Fourth Proportional to 329,679.92, 494,722.92 and 129,966.32

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Solution

The fourth proportional to 329,679.92, 494,722.92 and 129,966.32 is: 195,029.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,679.92 : 494,722.92 = 129,966.32 : x
  2. Step 2: Convert to fraction form
    329,679.92/494,722.92 = 129,966.32/x
  3. Step 3: Cross multiply
    329,679.92x = 494,722.92 × 129,966.32
  4. Step 4: Simplify right side
    329,679.92x = 64,297,317,332.05
  5. Step 5: Solve for x
    x = 64,297,317,332.05/329,679.92
  6. Step 6: Final answer
    x = 195,029.52

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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.