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Finding the Fourth Proportional to 266,546.60, 399,889.10 and 79,558.12

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Solution

The fourth proportional to 266,546.60, 399,889.10 and 79,558.12 is: 119,357.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,546.60 : 399,889.10 = 79,558.12 : x
  2. Step 2: Convert to fraction form
    266,546.60/399,889.10 = 79,558.12/x
  3. Step 3: Cross multiply
    266,546.60x = 399,889.10 × 79,558.12
  4. Step 4: Simplify right side
    266,546.60x = 31,814,425,004.49
  5. Step 5: Solve for x
    x = 31,814,425,004.49/266,546.60
  6. Step 6: Final answer
    x = 119,357.83

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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.