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Finding the Fourth Proportional to 323,517.80, 484,912.20 and 155,118.80

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Solution

The fourth proportional to 323,517.80, 484,912.20 and 155,118.80 is: 232,503.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,517.80 : 484,912.20 = 155,118.80 : x
  2. Step 2: Convert to fraction form
    323,517.80/484,912.20 = 155,118.80/x
  3. Step 3: Cross multiply
    323,517.80x = 484,912.20 × 155,118.80
  4. Step 4: Simplify right side
    323,517.80x = 75,218,998,569.36
  5. Step 5: Solve for x
    x = 75,218,998,569.36/323,517.80
  6. Step 6: Final answer
    x = 232,503.43

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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.