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Finding the Fourth Proportional to 329,722.80, 494,584.20 and 310,039.80

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Solution

The fourth proportional to 329,722.80, 494,584.20 and 310,039.80 is: 465,059.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,722.80 : 494,584.20 = 310,039.80 : x
  2. Step 2: Convert to fraction form
    329,722.80/494,584.20 = 310,039.80/x
  3. Step 3: Cross multiply
    329,722.80x = 494,584.20 × 310,039.80
  4. Step 4: Simplify right side
    329,722.80x = 153,340,786,451.16
  5. Step 5: Solve for x
    x = 153,340,786,451.16/329,722.80
  6. Step 6: Final answer
    x = 465,059.70

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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.