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Finding the Fourth Proportional to 372,198.57, 513,469.30 and 228,873.93

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Solution

The fourth proportional to 372,198.57, 513,469.30 and 228,873.93 is: 315,744.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,198.57 : 513,469.30 = 228,873.93 : x
  2. Step 2: Convert to fraction form
    372,198.57/513,469.30 = 228,873.93/x
  3. Step 3: Cross multiply
    372,198.57x = 513,469.30 × 228,873.93
  4. Step 4: Simplify right side
    372,198.57x = 117,519,736,625.35
  5. Step 5: Solve for x
    x = 117,519,736,625.35/372,198.57
  6. Step 6: Final answer
    x = 315,744.73

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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.