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Finding the Fourth Proportional to 266,314.60, 399,131.70 and 108,364.60

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Solution

The fourth proportional to 266,314.60, 399,131.70 and 108,364.60 is: 162,408.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,314.60 : 399,131.70 = 108,364.60 : x
  2. Step 2: Convert to fraction form
    266,314.60/399,131.70 = 108,364.60/x
  3. Step 3: Cross multiply
    266,314.60x = 399,131.70 × 108,364.60
  4. Step 4: Simplify right side
    266,314.60x = 43,251,747,017.82
  5. Step 5: Solve for x
    x = 43,251,747,017.82/266,314.60
  6. Step 6: Final answer
    x = 162,408.47

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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.