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Finding the Fourth Proportional to 279,187.57, 418,614.89 and 189,340.75

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Solution

The fourth proportional to 279,187.57, 418,614.89 and 189,340.75 is: 283,898.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,187.57 : 418,614.89 = 189,340.75 : x
  2. Step 2: Convert to fraction form
    279,187.57/418,614.89 = 189,340.75/x
  3. Step 3: Cross multiply
    279,187.57x = 418,614.89 × 189,340.75
  4. Step 4: Simplify right side
    279,187.57x = 79,260,855,140.69
  5. Step 5: Solve for x
    x = 79,260,855,140.69/279,187.57
  6. Step 6: Final answer
    x = 283,898.23

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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.