Home / 306,405,998.25-422,970,748.82-205,992,671.55

Finding the Fourth Proportional to 306,405,998.25, 422,970,748.82 and 205,992,671.55

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Solution

The fourth proportional to 306,405,998.25, 422,970,748.82 and 205,992,671.55 is: 284,357,600.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,405,998.25 : 422,970,748.82 = 205,992,671.55 : x
  2. Step 2: Convert to fraction form
    306,405,998.25/422,970,748.82 = 205,992,671.55/x
  3. Step 3: Cross multiply
    306,405,998.25x = 422,970,748.82 × 205,992,671.55
  4. Step 4: Simplify right side
    306,405,998.25x = 87,128,874,535,905,856
  5. Step 5: Solve for x
    x = 87,128,874,535,905,856/306,405,998.25
  6. Step 6: Final answer
    x = 284,357,600.81

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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.