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Finding the Fourth Proportional to 395,478.45, 593,611.38 and 218,069.01

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Solution

The fourth proportional to 395,478.45, 593,611.38 and 218,069.01 is: 327,320.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,478.45 : 593,611.38 = 218,069.01 : x
  2. Step 2: Convert to fraction form
    395,478.45/593,611.38 = 218,069.01/x
  3. Step 3: Cross multiply
    395,478.45x = 593,611.38 × 218,069.01
  4. Step 4: Simplify right side
    395,478.45x = 129,448,245,961.33
  5. Step 5: Solve for x
    x = 129,448,245,961.33/395,478.45
  6. Step 6: Final answer
    x = 327,320.61

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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.