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Finding the Fourth Proportional to 271,743.20, 407,614.80 and 74,751.20

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Solution

The fourth proportional to 271,743.20, 407,614.80 and 74,751.20 is: 112,126.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,743.20 : 407,614.80 = 74,751.20 : x
  2. Step 2: Convert to fraction form
    271,743.20/407,614.80 = 74,751.20/x
  3. Step 3: Cross multiply
    271,743.20x = 407,614.80 × 74,751.20
  4. Step 4: Simplify right side
    271,743.20x = 30,469,695,437.76
  5. Step 5: Solve for x
    x = 30,469,695,437.76/271,743.20
  6. Step 6: Final answer
    x = 112,126.80

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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.