Home / 290,441,961.82-400,798,213.99-158,280,120.69

Finding the Fourth Proportional to 290,441,961.82, 400,798,213.99 and 158,280,120.69

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Solution

The fourth proportional to 290,441,961.82, 400,798,213.99 and 158,280,120.69 is: 218,420,194.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,441,961.82 : 400,798,213.99 = 158,280,120.69 : x
  2. Step 2: Convert to fraction form
    290,441,961.82/400,798,213.99 = 158,280,120.69/x
  3. Step 3: Cross multiply
    290,441,961.82x = 400,798,213.99 × 158,280,120.69
  4. Step 4: Simplify right side
    290,441,961.82x = 63,438,389,682,673,648
  5. Step 5: Solve for x
    x = 63,438,389,682,673,648/290,441,961.82
  6. Step 6: Final answer
    x = 218,420,194.12

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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.