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Finding the Fourth Proportional to 387,310.40, 580,850.40 and 150,516.80

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Solution

The fourth proportional to 387,310.40, 580,850.40 and 150,516.80 is: 225,730.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,310.40 : 580,850.40 = 150,516.80 : x
  2. Step 2: Convert to fraction form
    387,310.40/580,850.40 = 150,516.80/x
  3. Step 3: Cross multiply
    387,310.40x = 580,850.40 × 150,516.80
  4. Step 4: Simplify right side
    387,310.40x = 87,427,743,486.72
  5. Step 5: Solve for x
    x = 87,427,743,486.72/387,310.40
  6. Step 6: Final answer
    x = 225,730.43

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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.