Home / 312,123,495.78-430,385,324.49-198,913,737.69

Finding the Fourth Proportional to 312,123,495.78, 430,385,324.49 and 198,913,737.69

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Solution

The fourth proportional to 312,123,495.78, 430,385,324.49 and 198,913,737.69 is: 274,281,028.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,123,495.78 : 430,385,324.49 = 198,913,737.69 : x
  2. Step 2: Convert to fraction form
    312,123,495.78/430,385,324.49 = 198,913,737.69/x
  3. Step 3: Cross multiply
    312,123,495.78x = 430,385,324.49 × 198,913,737.69
  4. Step 4: Simplify right side
    312,123,495.78x = 85,609,553,541,229,392
  5. Step 5: Solve for x
    x = 85,609,553,541,229,392/312,123,495.78
  6. Step 6: Final answer
    x = 274,281,028.82

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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.