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Finding the Fourth Proportional to 279,211.87, 418,817.82 and 195,136.21

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Solution

The fourth proportional to 279,211.87, 418,817.82 and 195,136.21 is: 292,704.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,211.87 : 418,817.82 = 195,136.21 : x
  2. Step 2: Convert to fraction form
    279,211.87/418,817.82 = 195,136.21/x
  3. Step 3: Cross multiply
    279,211.87x = 418,817.82 × 195,136.21
  4. Step 4: Simplify right side
    279,211.87x = 81,726,519,981.17
  5. Step 5: Solve for x
    x = 81,726,519,981.17/279,211.87
  6. Step 6: Final answer
    x = 292,704.32

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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.