Home / 354,989,033.66-489,903,790.12-198,359,942.78

Finding the Fourth Proportional to 354,989,033.66, 489,903,790.12 and 198,359,942.78

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Solution

The fourth proportional to 354,989,033.66, 489,903,790.12 and 198,359,942.78 is: 273,747,295.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,989,033.66 : 489,903,790.12 = 198,359,942.78 : x
  2. Step 2: Convert to fraction form
    354,989,033.66/489,903,790.12 = 198,359,942.78/x
  3. Step 3: Cross multiply
    354,989,033.66x = 489,903,790.12 × 198,359,942.78
  4. Step 4: Simplify right side
    354,989,033.66x = 97,177,287,773,458,816
  5. Step 5: Solve for x
    x = 97,177,287,773,458,816/354,989,033.66
  6. Step 6: Final answer
    x = 273,747,295.16

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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.