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Finding the Fourth Proportional to 279,134.58, 418,715.55 and 79,468.98

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Solution

The fourth proportional to 279,134.58, 418,715.55 and 79,468.98 is: 119,207.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,134.58 : 418,715.55 = 79,468.98 : x
  2. Step 2: Convert to fraction form
    279,134.58/418,715.55 = 79,468.98/x
  3. Step 3: Cross multiply
    279,134.58x = 418,715.55 × 79,468.98
  4. Step 4: Simplify right side
    279,134.58x = 33,274,897,668.64
  5. Step 5: Solve for x
    x = 33,274,897,668.64/279,134.58
  6. Step 6: Final answer
    x = 119,207.36

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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.