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Finding the Fourth Proportional to 279,118.52, 418,733.14 and 79,446.76

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Solution

The fourth proportional to 279,118.52, 418,733.14 and 79,446.76 is: 119,185.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,118.52 : 418,733.14 = 79,446.76 : x
  2. Step 2: Convert to fraction form
    279,118.52/418,733.14 = 79,446.76/x
  3. Step 3: Cross multiply
    279,118.52x = 418,733.14 × 79,446.76
  4. Step 4: Simplify right side
    279,118.52x = 33,266,991,277.63
  5. Step 5: Solve for x
    x = 33,266,991,277.63/279,118.52
  6. Step 6: Final answer
    x = 119,185.90

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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.