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Finding the Fourth Proportional to 279,265.14, 418,911.55 and 79,614.94

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Solution

The fourth proportional to 279,265.14, 418,911.55 and 79,614.94 is: 119,426.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,265.14 : 418,911.55 = 79,614.94 : x
  2. Step 2: Convert to fraction form
    279,265.14/418,911.55 = 79,614.94/x
  3. Step 3: Cross multiply
    279,265.14x = 418,911.55 × 79,614.94
  4. Step 4: Simplify right side
    279,265.14x = 33,351,617,918.56
  5. Step 5: Solve for x
    x = 33,351,617,918.56/279,265.14
  6. Step 6: Final answer
    x = 119,426.36

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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.