Home / 378,012,170.82-521,654,932.17-219,274,397.76

Finding the Fourth Proportional to 378,012,170.82, 521,654,932.17 and 219,274,397.76

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Solution

The fourth proportional to 378,012,170.82, 521,654,932.17 and 219,274,397.76 is: 302,597,587.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,012,170.82 : 521,654,932.17 = 219,274,397.76 : x
  2. Step 2: Convert to fraction form
    378,012,170.82/521,654,932.17 = 219,274,397.76/x
  3. Step 3: Cross multiply
    378,012,170.82x = 521,654,932.17 × 219,274,397.76
  4. Step 4: Simplify right side
    378,012,170.82x = 114,385,571,090,110,400
  5. Step 5: Solve for x
    x = 114,385,571,090,110,400/378,012,170.82
  6. Step 6: Final answer
    x = 302,597,587.91

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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.