Home / 354,989,033.41-489,903,789.78-198,359,942.53

Finding the Fourth Proportional to 354,989,033.41, 489,903,789.78 and 198,359,942.53

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Solution

The fourth proportional to 354,989,033.41, 489,903,789.78 and 198,359,942.53 is: 273,747,294.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,989,033.41 : 489,903,789.78 = 198,359,942.53 : x
  2. Step 2: Convert to fraction form
    354,989,033.41/489,903,789.78 = 198,359,942.53/x
  3. Step 3: Cross multiply
    354,989,033.41x = 489,903,789.78 × 198,359,942.53
  4. Step 4: Simplify right side
    354,989,033.41x = 97,177,287,582,548,688
  5. Step 5: Solve for x
    x = 97,177,287,582,548,688/354,989,033.41
  6. Step 6: Final answer
    x = 273,747,294.81

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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.