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Finding the Fourth Proportional to 378,443.88, 522,212.58 and 208,667.88

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Solution

The fourth proportional to 378,443.88, 522,212.58 and 208,667.88 is: 287,939.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,443.88 : 522,212.58 = 208,667.88 : x
  2. Step 2: Convert to fraction form
    378,443.88/522,212.58 = 208,667.88/x
  3. Step 3: Cross multiply
    378,443.88x = 522,212.58 × 208,667.88
  4. Step 4: Simplify right side
    378,443.88x = 108,968,991,977.93
  5. Step 5: Solve for x
    x = 108,968,991,977.93/378,443.88
  6. Step 6: Final answer
    x = 287,939.63

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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.