Home / 278,981,363,063.88-418,538,554,358.40-90,327,315,422.52

Finding the Fourth Proportional to 278,981,363,063.88, 418,538,554,358.40 and 90,327,315,422.52

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Solution

The fourth proportional to 278,981,363,063.88, 418,538,554,358.40 and 90,327,315,422.52 is: 135,512,507,361.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,981,363,063.88 : 418,538,554,358.40 = 90,327,315,422.52 : x
  2. Step 2: Convert to fraction form
    278,981,363,063.88/418,538,554,358.40 = 90,327,315,422.52/x
  3. Step 3: Cross multiply
    278,981,363,063.88x = 418,538,554,358.40 × 90,327,315,422.52
  4. Step 4: Simplify right side
    278,981,363,063.88x = 37,805,464,016,016,732,323,840
  5. Step 5: Solve for x
    x = 37,805,464,016,016,732,323,840/278,981,363,063.88
  6. Step 6: Final answer
    x = 135,512,507,361.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.