Home / 394,192,916.70-543,989,748.06-217,992,766.20

Finding the Fourth Proportional to 394,192,916.70, 543,989,748.06 and 217,992,766.20

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Solution

The fourth proportional to 394,192,916.70, 543,989,748.06 and 217,992,766.20 is: 300,831,965.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,192,916.70 : 543,989,748.06 = 217,992,766.20 : x
  2. Step 2: Convert to fraction form
    394,192,916.70/543,989,748.06 = 217,992,766.20/x
  3. Step 3: Cross multiply
    394,192,916.70x = 543,989,748.06 × 217,992,766.20
  4. Step 4: Simplify right side
    394,192,916.70x = 118,585,829,964,040,464
  5. Step 5: Solve for x
    x = 118,585,829,964,040,464/394,192,916.70
  6. Step 6: Final answer
    x = 300,831,965.62

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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.