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Finding the Fourth Proportional to 273,859.20, 410,011.20 and 211,132.80

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Solution

The fourth proportional to 273,859.20, 410,011.20 and 211,132.80 is: 316,099.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,859.20 : 410,011.20 = 211,132.80 : x
  2. Step 2: Convert to fraction form
    273,859.20/410,011.20 = 211,132.80/x
  3. Step 3: Cross multiply
    273,859.20x = 410,011.20 × 211,132.80
  4. Step 4: Simplify right side
    273,859.20x = 86,566,812,687.36
  5. Step 5: Solve for x
    x = 86,566,812,687.36/273,859.20
  6. Step 6: Final answer
    x = 316,099.71

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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.