Home / 312,467,500.92-431,204,372.46-173,234,678.52

Finding the Fourth Proportional to 312,467,500.92, 431,204,372.46 and 173,234,678.52

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Solution

The fourth proportional to 312,467,500.92, 431,204,372.46 and 173,234,678.52 is: 239,063,424.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,467,500.92 : 431,204,372.46 = 173,234,678.52 : x
  2. Step 2: Convert to fraction form
    312,467,500.92/431,204,372.46 = 173,234,678.52/x
  3. Step 3: Cross multiply
    312,467,500.92x = 431,204,372.46 × 173,234,678.52
  4. Step 4: Simplify right side
    312,467,500.92x = 74,699,550,839,526,448
  5. Step 5: Solve for x
    x = 74,699,550,839,526,448/312,467,500.92
  6. Step 6: Final answer
    x = 239,063,424.58

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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.