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Finding the Fourth Proportional to 264,171.30, 396,243.03 and 86,654.94

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Solution

The fourth proportional to 264,171.30, 396,243.03 and 86,654.94 is: 129,977.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,171.30 : 396,243.03 = 86,654.94 : x
  2. Step 2: Convert to fraction form
    264,171.30/396,243.03 = 86,654.94/x
  3. Step 3: Cross multiply
    264,171.30x = 396,243.03 × 86,654.94
  4. Step 4: Simplify right side
    264,171.30x = 34,336,415,990.07
  5. Step 5: Solve for x
    x = 34,336,415,990.07/264,171.30
  6. Step 6: Final answer
    x = 129,977.84

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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.