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Finding the Fourth Proportional to 483,415.88, 667,131.33 and 279,530.78

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Solution

The fourth proportional to 483,415.88, 667,131.33 and 279,530.78 is: 385,762.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,415.88 : 667,131.33 = 279,530.78 : x
  2. Step 2: Convert to fraction form
    483,415.88/667,131.33 = 279,530.78/x
  3. Step 3: Cross multiply
    483,415.88x = 667,131.33 × 279,530.78
  4. Step 4: Simplify right side
    483,415.88x = 186,483,737,701.68
  5. Step 5: Solve for x
    x = 186,483,737,701.68/483,415.88
  6. Step 6: Final answer
    x = 385,762.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.