Home / 279,527,921.39-385,765,789.92-154,079,834.38

Finding the Fourth Proportional to 279,527,921.39, 385,765,789.92 and 154,079,834.38

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Solution

The fourth proportional to 279,527,921.39, 385,765,789.92 and 154,079,834.38 is: 212,639,684.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,527,921.39 : 385,765,789.92 = 154,079,834.38 : x
  2. Step 2: Convert to fraction form
    279,527,921.39/385,765,789.92 = 154,079,834.38/x
  3. Step 3: Cross multiply
    279,527,921.39x = 385,765,789.92 × 154,079,834.38
  4. Step 4: Simplify right side
    279,527,921.39x = 59,438,729,018,801,256
  5. Step 5: Solve for x
    x = 59,438,729,018,801,256/279,527,921.39
  6. Step 6: Final answer
    x = 212,639,684.52

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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.