Home / 288,863,065.92-398,526,417.12-189,797,169.60

Finding the Fourth Proportional to 288,863,065.92, 398,526,417.12 and 189,797,169.60

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Solution

The fourth proportional to 288,863,065.92, 398,526,417.12 and 189,797,169.60 is: 261,851,357.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,863,065.92 : 398,526,417.12 = 189,797,169.60 : x
  2. Step 2: Convert to fraction form
    288,863,065.92/398,526,417.12 = 189,797,169.60/x
  3. Step 3: Cross multiply
    288,863,065.92x = 398,526,417.12 × 189,797,169.60
  4. Step 4: Simplify right side
    288,863,065.92x = 75,639,185,980,204,976
  5. Step 5: Solve for x
    x = 75,639,185,980,204,976/288,863,065.92
  6. Step 6: Final answer
    x = 261,851,357.63

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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.