Home / 378,220.36-521,942.52-208,454.08

Finding the Fourth Proportional to 378,220.36, 521,942.52 and 208,454.08

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Solution

The fourth proportional to 378,220.36, 521,942.52 and 208,454.08 is: 287,665.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,220.36 : 521,942.52 = 208,454.08 : x
  2. Step 2: Convert to fraction form
    378,220.36/521,942.52 = 208,454.08/x
  3. Step 3: Cross multiply
    378,220.36x = 521,942.52 × 208,454.08
  4. Step 4: Simplify right side
    378,220.36x = 108,801,047,819.48
  5. Step 5: Solve for x
    x = 108,801,047,819.48/378,220.36
  6. Step 6: Final answer
    x = 287,665.76

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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.