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Finding the Fourth Proportional to 266,391.63, 399,735.08 and 108,607.89

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Solution

The fourth proportional to 266,391.63, 399,735.08 and 108,607.89 is: 162,972.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,391.63 : 399,735.08 = 108,607.89 : x
  2. Step 2: Convert to fraction form
    266,391.63/399,735.08 = 108,607.89/x
  3. Step 3: Cross multiply
    266,391.63x = 399,735.08 × 108,607.89
  4. Step 4: Simplify right side
    266,391.63x = 43,414,383,054.74
  5. Step 5: Solve for x
    x = 43,414,383,054.74/266,391.63
  6. Step 6: Final answer
    x = 162,972.02

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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.