Home / 290,441,919.92-400,798,156.42-158,280,078.81

Finding the Fourth Proportional to 290,441,919.92, 400,798,156.42 and 158,280,078.81

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Solution

The fourth proportional to 290,441,919.92, 400,798,156.42 and 158,280,078.81 is: 218,420,136.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,441,919.92 : 400,798,156.42 = 158,280,078.81 : x
  2. Step 2: Convert to fraction form
    290,441,919.92/400,798,156.42 = 158,280,078.81/x
  3. Step 3: Cross multiply
    290,441,919.92x = 400,798,156.42 × 158,280,078.81
  4. Step 4: Simplify right side
    290,441,919.92x = 63,438,363,786,761,144
  5. Step 5: Solve for x
    x = 63,438,363,786,761,144/290,441,919.92
  6. Step 6: Final answer
    x = 218,420,136.48

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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.