Home / 354,998,447.31-489,946,523.81-204,288,005.78

Finding the Fourth Proportional to 354,998,447.31, 489,946,523.81 and 204,288,005.78

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Solution

The fourth proportional to 354,998,447.31, 489,946,523.81 and 204,288,005.78 is: 281,945,453.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,998,447.31 : 489,946,523.81 = 204,288,005.78 : x
  2. Step 2: Convert to fraction form
    354,998,447.31/489,946,523.81 = 204,288,005.78/x
  3. Step 3: Cross multiply
    354,998,447.31x = 489,946,523.81 × 204,288,005.78
  4. Step 4: Simplify right side
    354,998,447.31x = 100,090,198,284,517,024
  5. Step 5: Solve for x
    x = 100,090,198,284,517,024/354,998,447.31
  6. Step 6: Final answer
    x = 281,945,453.69

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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.