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Finding the Fourth Proportional to 299,396.70, 449,095.05 and 89,007.30

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Solution

The fourth proportional to 299,396.70, 449,095.05 and 89,007.30 is: 133,510.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,396.70 : 449,095.05 = 89,007.30 : x
  2. Step 2: Convert to fraction form
    299,396.70/449,095.05 = 89,007.30/x
  3. Step 3: Cross multiply
    299,396.70x = 449,095.05 × 89,007.30
  4. Step 4: Simplify right side
    299,396.70x = 39,972,737,843.87
  5. Step 5: Solve for x
    x = 39,972,737,843.87/299,396.70
  6. Step 6: Final answer
    x = 133,510.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.