Home / 238,981,282.58-358,535,718.66-85,642,839.38

Finding the Fourth Proportional to 238,981,282.58, 358,535,718.66 and 85,642,839.38

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Solution

The fourth proportional to 238,981,282.58, 358,535,718.66 and 85,642,839.38 is: 128,487,120.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,981,282.58 : 358,535,718.66 = 85,642,839.38 : x
  2. Step 2: Convert to fraction form
    238,981,282.58/358,535,718.66 = 85,642,839.38/x
  3. Step 3: Cross multiply
    238,981,282.58x = 358,535,718.66 × 85,642,839.38
  4. Step 4: Simplify right side
    238,981,282.58x = 30,706,016,965,191,248
  5. Step 5: Solve for x
    x = 30,706,016,965,191,248/238,981,282.58
  6. Step 6: Final answer
    x = 128,487,120.97

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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.