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Finding the Fourth Proportional to 271,367.20, 407,245.20 and 152,912.80

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Solution

The fourth proportional to 271,367.20, 407,245.20 and 152,912.80 is: 229,478.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,367.20 : 407,245.20 = 152,912.80 : x
  2. Step 2: Convert to fraction form
    271,367.20/407,245.20 = 152,912.80/x
  3. Step 3: Cross multiply
    271,367.20x = 407,245.20 × 152,912.80
  4. Step 4: Simplify right side
    271,367.20x = 62,273,003,818.56
  5. Step 5: Solve for x
    x = 62,273,003,818.56/271,367.20
  6. Step 6: Final answer
    x = 229,478.74

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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.