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Finding the Fourth Proportional to 378,212.20, 566,953.80 and 218,123.80

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Solution

The fourth proportional to 378,212.20, 566,953.80 and 218,123.80 is: 326,975.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,212.20 : 566,953.80 = 218,123.80 : x
  2. Step 2: Convert to fraction form
    378,212.20/566,953.80 = 218,123.80/x
  3. Step 3: Cross multiply
    378,212.20x = 566,953.80 × 218,123.80
  4. Step 4: Simplify right side
    378,212.20x = 123,666,117,280.44
  5. Step 5: Solve for x
    x = 123,666,117,280.44/378,212.20
  6. Step 6: Final answer
    x = 326,975.48

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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.