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Finding the Fourth Proportional to 395,019.56, 545,124.66 and 225,250.04

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Solution

The fourth proportional to 395,019.56, 545,124.66 and 225,250.04 is: 310,843.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,019.56 : 545,124.66 = 225,250.04 : x
  2. Step 2: Convert to fraction form
    395,019.56/545,124.66 = 225,250.04/x
  3. Step 3: Cross multiply
    395,019.56x = 545,124.66 × 225,250.04
  4. Step 4: Simplify right side
    395,019.56x = 122,789,351,469.99
  5. Step 5: Solve for x
    x = 122,789,351,469.99/395,019.56
  6. Step 6: Final answer
    x = 310,843.72

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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.