Home / 354,989,033.53-489,903,789.95-198,359,942.65

Finding the Fourth Proportional to 354,989,033.53, 489,903,789.95 and 198,359,942.65

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Solution

The fourth proportional to 354,989,033.53, 489,903,789.95 and 198,359,942.65 is: 273,747,294.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,989,033.53 : 489,903,789.95 = 198,359,942.65 : x
  2. Step 2: Convert to fraction form
    354,989,033.53/489,903,789.95 = 198,359,942.65/x
  3. Step 3: Cross multiply
    354,989,033.53x = 489,903,789.95 × 198,359,942.65
  4. Step 4: Simplify right side
    354,989,033.53x = 97,177,287,677,507,856
  5. Step 5: Solve for x
    x = 97,177,287,677,507,856/354,989,033.53
  6. Step 6: Final answer
    x = 273,747,294.98

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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.