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Finding the Fourth Proportional to 382,992.80, 573,128.40 and 333,615.20

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Solution

The fourth proportional to 382,992.80, 573,128.40 and 333,615.20 is: 499,237.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,992.80 : 573,128.40 = 333,615.20 : x
  2. Step 2: Convert to fraction form
    382,992.80/573,128.40 = 333,615.20/x
  3. Step 3: Cross multiply
    382,992.80x = 573,128.40 × 333,615.20
  4. Step 4: Simplify right side
    382,992.80x = 191,204,345,791.68
  5. Step 5: Solve for x
    x = 191,204,345,791.68/382,992.80
  6. Step 6: Final answer
    x = 499,237.44

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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.