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Finding the Fourth Proportional to 274,067.20, 411,100.80 and 211,782.40

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Solution

The fourth proportional to 274,067.20, 411,100.80 and 211,782.40 is: 317,673.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,067.20 : 411,100.80 = 211,782.40 : x
  2. Step 2: Convert to fraction form
    274,067.20/411,100.80 = 211,782.40/x
  3. Step 3: Cross multiply
    274,067.20x = 411,100.80 × 211,782.40
  4. Step 4: Simplify right side
    274,067.20x = 87,063,914,065.92
  5. Step 5: Solve for x
    x = 87,063,914,065.92/274,067.20
  6. Step 6: Final answer
    x = 317,673.60

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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.