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Finding the Fourth Proportional to 266,408.42, 399,612.63 and 108,649.22

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Solution

The fourth proportional to 266,408.42, 399,612.63 and 108,649.22 is: 162,973.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,408.42 : 399,612.63 = 108,649.22 : x
  2. Step 2: Convert to fraction form
    266,408.42/399,612.63 = 108,649.22/x
  3. Step 3: Cross multiply
    266,408.42x = 399,612.63 × 108,649.22
  4. Step 4: Simplify right side
    266,408.42x = 43,417,600,551.65
  5. Step 5: Solve for x
    x = 43,417,600,551.65/266,408.42
  6. Step 6: Final answer
    x = 162,973.83

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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.