Home / 312,162,505.74-430,810,711.92-172,976,926.86

Finding the Fourth Proportional to 312,162,505.74, 430,810,711.92 and 172,976,926.86

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Solution

The fourth proportional to 312,162,505.74, 430,810,711.92 and 172,976,926.86 is: 238,722,817.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,162,505.74 : 430,810,711.92 = 172,976,926.86 : x
  2. Step 2: Convert to fraction form
    312,162,505.74/430,810,711.92 = 172,976,926.86/x
  3. Step 3: Cross multiply
    312,162,505.74x = 430,810,711.92 × 172,976,926.86
  4. Step 4: Simplify right side
    312,162,505.74x = 74,520,313,006,290,384
  5. Step 5: Solve for x
    x = 74,520,313,006,290,384/312,162,505.74
  6. Step 6: Final answer
    x = 238,722,817.88

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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.