Home / 263,422,009.20-394,979,856-99,672,394.56

Finding the Fourth Proportional to 263,422,009.20, 394,979,856 and 99,672,394.56

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Solution

The fourth proportional to 263,422,009.20, 394,979,856 and 99,672,394.56 is: 149,450,640.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,422,009.20 : 394,979,856 = 99,672,394.56 : x
  2. Step 2: Convert to fraction form
    263,422,009.20/394,979,856 = 99,672,394.56/x
  3. Step 3: Cross multiply
    263,422,009.20x = 394,979,856 × 99,672,394.56
  4. Step 4: Simplify right side
    263,422,009.20x = 39,368,588,050,483,984
  5. Step 5: Solve for x
    x = 39,368,588,050,483,984/263,422,009.20
  6. Step 6: Final answer
    x = 149,450,640.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.