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Finding the Fourth Proportional to 226,872.60, 339,963.30 and 191,621.40

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Solution

The fourth proportional to 226,872.60, 339,963.30 and 191,621.40 is: 287,140.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,872.60 : 339,963.30 = 191,621.40 : x
  2. Step 2: Convert to fraction form
    226,872.60/339,963.30 = 191,621.40/x
  3. Step 3: Cross multiply
    226,872.60x = 339,963.30 × 191,621.40
  4. Step 4: Simplify right side
    226,872.60x = 65,144,243,494.62
  5. Step 5: Solve for x
    x = 65,144,243,494.62/226,872.60
  6. Step 6: Final answer
    x = 287,140.20

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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.