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Finding the Fourth Proportional to 329,078.46, 493,617.70 and 79,760.46

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Solution

The fourth proportional to 329,078.46, 493,617.70 and 79,760.46 is: 119,640.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,078.46 : 493,617.70 = 79,760.46 : x
  2. Step 2: Convert to fraction form
    329,078.46/493,617.70 = 79,760.46/x
  3. Step 3: Cross multiply
    329,078.46x = 493,617.70 × 79,760.46
  4. Step 4: Simplify right side
    329,078.46x = 39,371,175,850.79
  5. Step 5: Solve for x
    x = 39,371,175,850.79/329,078.46
  6. Step 6: Final answer
    x = 119,640.69

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1.5x scale

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.