Home / 378,146.20-521,845.22-208,386.36

Finding the Fourth Proportional to 378,146.20, 521,845.22 and 208,386.36

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Solution

The fourth proportional to 378,146.20, 521,845.22 and 208,386.36 is: 287,575.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,146.20 : 521,845.22 = 208,386.36 : x
  2. Step 2: Convert to fraction form
    378,146.20/521,845.22 = 208,386.36/x
  3. Step 3: Cross multiply
    378,146.20x = 521,845.22 × 208,386.36
  4. Step 4: Simplify right side
    378,146.20x = 108,745,425,879.20
  5. Step 5: Solve for x
    x = 108,745,425,879.20/378,146.20
  6. Step 6: Final answer
    x = 287,575.09

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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.