Home / 378,033.16-521,689.80-208,273.36

Finding the Fourth Proportional to 378,033.16, 521,689.80 and 208,273.36

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Solution

The fourth proportional to 378,033.16, 521,689.80 and 208,273.36 is: 287,419.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,033.16 : 521,689.80 = 208,273.36 : x
  2. Step 2: Convert to fraction form
    378,033.16/521,689.80 = 208,273.36/x
  3. Step 3: Cross multiply
    378,033.16x = 521,689.80 × 208,273.36
  4. Step 4: Simplify right side
    378,033.16x = 108,654,087,523.73
  5. Step 5: Solve for x
    x = 108,654,087,523.73/378,033.16
  6. Step 6: Final answer
    x = 287,419.46

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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.