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Finding the Fourth Proportional to 386,731, 533,786.87 and 264,272.97

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Solution

The fourth proportional to 386,731, 533,786.87 and 264,272.97 is: 364,763.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,731 : 533,786.87 = 264,272.97 : x
  2. Step 2: Convert to fraction form
    386,731/533,786.87 = 264,272.97/x
  3. Step 3: Cross multiply
    386,731x = 533,786.87 × 264,272.97
  4. Step 4: Simplify right side
    386,731x = 141,065,441,481.90
  5. Step 5: Solve for x
    x = 141,065,441,481.90/386,731
  6. Step 6: Final answer
    x = 364,763.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.