Home / 312,162,479.73-430,810,675.97-172,976,900.85

Finding the Fourth Proportional to 312,162,479.73, 430,810,675.97 and 172,976,900.85

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Solution

The fourth proportional to 312,162,479.73, 430,810,675.97 and 172,976,900.85 is: 238,722,781.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,162,479.73 : 430,810,675.97 = 172,976,900.85 : x
  2. Step 2: Convert to fraction form
    312,162,479.73/430,810,675.97 = 172,976,900.85/x
  3. Step 3: Cross multiply
    312,162,479.73x = 430,810,675.97 × 172,976,900.85
  4. Step 4: Simplify right side
    312,162,479.73x = 74,520,295,582,384,176
  5. Step 5: Solve for x
    x = 74,520,295,582,384,176/312,162,479.73
  6. Step 6: Final answer
    x = 238,722,781.95

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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.