Home / 378,049.20-521,731.44-208,283.28

Finding the Fourth Proportional to 378,049.20, 521,731.44 and 208,283.28

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Solution

The fourth proportional to 378,049.20, 521,731.44 and 208,283.28 is: 287,443.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,049.20 : 521,731.44 = 208,283.28 : x
  2. Step 2: Convert to fraction form
    378,049.20/521,731.44 = 208,283.28/x
  3. Step 3: Cross multiply
    378,049.20x = 521,731.44 × 208,283.28
  4. Step 4: Simplify right side
    378,049.20x = 108,667,935,602.32
  5. Step 5: Solve for x
    x = 108,667,935,602.32/378,049.20
  6. Step 6: Final answer
    x = 287,443.90

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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.