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Finding the Fourth Proportional to 271,229.60, 406,844.40 and 74,237.60

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Solution

The fourth proportional to 271,229.60, 406,844.40 and 74,237.60 is: 111,356.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,229.60 : 406,844.40 = 74,237.60 : x
  2. Step 2: Convert to fraction form
    271,229.60/406,844.40 = 74,237.60/x
  3. Step 3: Cross multiply
    271,229.60x = 406,844.40 × 74,237.60
  4. Step 4: Simplify right side
    271,229.60x = 30,203,151,829.44
  5. Step 5: Solve for x
    x = 30,203,151,829.44/271,229.60
  6. Step 6: Final answer
    x = 111,356.40

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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.