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Finding the Fourth Proportional to 279,380.95, 419,136.50 and 79,704.07

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Solution

The fourth proportional to 279,380.95, 419,136.50 and 79,704.07 is: 119,574.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,380.95 : 419,136.50 = 79,704.07 : x
  2. Step 2: Convert to fraction form
    279,380.95/419,136.50 = 79,704.07/x
  3. Step 3: Cross multiply
    279,380.95x = 419,136.50 × 79,704.07
  4. Step 4: Simplify right side
    279,380.95x = 33,406,884,935.56
  5. Step 5: Solve for x
    x = 33,406,884,935.56/279,380.95
  6. Step 6: Final answer
    x = 119,574.67

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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.