Home / 378,165.50-521,868.39-208,399.63

Finding the Fourth Proportional to 378,165.50, 521,868.39 and 208,399.63

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Solution

The fourth proportional to 378,165.50, 521,868.39 and 208,399.63 is: 287,591.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,165.50 : 521,868.39 = 208,399.63 : x
  2. Step 2: Convert to fraction form
    378,165.50/521,868.39 = 208,399.63/x
  3. Step 3: Cross multiply
    378,165.50x = 521,868.39 × 208,399.63
  4. Step 4: Simplify right side
    378,165.50x = 108,757,176,775.35
  5. Step 5: Solve for x
    x = 108,757,176,775.35/378,165.50
  6. Step 6: Final answer
    x = 287,591.48

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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.