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Finding the Fourth Proportional to 279,134.08, 418,714.80 and 79,468.48

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Solution

The fourth proportional to 279,134.08, 418,714.80 and 79,468.48 is: 119,206.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,134.08 : 418,714.80 = 79,468.48 : x
  2. Step 2: Convert to fraction form
    279,134.08/418,714.80 = 79,468.48/x
  3. Step 3: Cross multiply
    279,134.08x = 418,714.80 × 79,468.48
  4. Step 4: Simplify right side
    279,134.08x = 33,274,628,709.50
  5. Step 5: Solve for x
    x = 33,274,628,709.50/279,134.08
  6. Step 6: Final answer
    x = 119,206.61

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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.