Home / 312,162,502.73-430,810,707.78-172,976,923.85

Finding the Fourth Proportional to 312,162,502.73, 430,810,707.78 and 172,976,923.85

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Solution

The fourth proportional to 312,162,502.73, 430,810,707.78 and 172,976,923.85 is: 238,722,813.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,162,502.73 : 430,810,707.78 = 172,976,923.85 : x
  2. Step 2: Convert to fraction form
    312,162,502.73/430,810,707.78 = 172,976,923.85/x
  3. Step 3: Cross multiply
    312,162,502.73x = 430,810,707.78 × 172,976,923.85
  4. Step 4: Simplify right side
    312,162,502.73x = 74,520,310,991,271,600
  5. Step 5: Solve for x
    x = 74,520,310,991,271,600/312,162,502.73
  6. Step 6: Final answer
    x = 238,722,813.73

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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.