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Finding the Fourth Proportional to 273,727.20, 410,007.60 and 221,239.20

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Solution

The fourth proportional to 273,727.20, 410,007.60 and 221,239.20 is: 331,387.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,727.20 : 410,007.60 = 221,239.20 : x
  2. Step 2: Convert to fraction form
    273,727.20/410,007.60 = 221,239.20/x
  3. Step 3: Cross multiply
    273,727.20x = 410,007.60 × 221,239.20
  4. Step 4: Simplify right side
    273,727.20x = 90,709,753,417.92
  5. Step 5: Solve for x
    x = 90,709,753,417.92/273,727.20
  6. Step 6: Final answer
    x = 331,387.43

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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.