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Finding the Fourth Proportional to 279,179.46, 418,771.65 and 79,499.68

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Solution

The fourth proportional to 279,179.46, 418,771.65 and 79,499.68 is: 119,250.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,179.46 : 418,771.65 = 79,499.68 : x
  2. Step 2: Convert to fraction form
    279,179.46/418,771.65 = 79,499.68/x
  3. Step 3: Cross multiply
    279,179.46x = 418,771.65 × 79,499.68
  4. Step 4: Simplify right side
    279,179.46x = 33,292,210,074.21
  5. Step 5: Solve for x
    x = 33,292,210,074.21/279,179.46
  6. Step 6: Final answer
    x = 119,250.21

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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.