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Finding the Fourth Proportional to 483,257.86, 666,856.83 and 279,322

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Solution

The fourth proportional to 483,257.86, 666,856.83 and 279,322 is: 385,441.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,257.86 : 666,856.83 = 279,322 : x
  2. Step 2: Convert to fraction form
    483,257.86/666,856.83 = 279,322/x
  3. Step 3: Cross multiply
    483,257.86x = 666,856.83 × 279,322
  4. Step 4: Simplify right side
    483,257.86x = 186,267,783,469.26
  5. Step 5: Solve for x
    x = 186,267,783,469.26/483,257.86
  6. Step 6: Final answer
    x = 385,441.81

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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.