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Finding the Fourth Proportional to 266,287.06, 399,408.72 and 79,298.56

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Solution

The fourth proportional to 266,287.06, 399,408.72 and 79,298.56 is: 118,941.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,287.06 : 399,408.72 = 79,298.56 : x
  2. Step 2: Convert to fraction form
    266,287.06/399,408.72 = 79,298.56/x
  3. Step 3: Cross multiply
    266,287.06x = 399,408.72 × 79,298.56
  4. Step 4: Simplify right side
    266,287.06x = 31,672,536,347.44
  5. Step 5: Solve for x
    x = 31,672,536,347.44/266,287.06
  6. Step 6: Final answer
    x = 118,941.33

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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.