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Finding the Fourth Proportional to 325,926.78, 489,107.07 and 133,958.64

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Solution

The fourth proportional to 325,926.78, 489,107.07 and 133,958.64 is: 201,027.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,926.78 : 489,107.07 = 133,958.64 : x
  2. Step 2: Convert to fraction form
    325,926.78/489,107.07 = 133,958.64/x
  3. Step 3: Cross multiply
    325,926.78x = 489,107.07 × 133,958.64
  4. Step 4: Simplify right side
    325,926.78x = 65,520,117,911.58
  5. Step 5: Solve for x
    x = 65,520,117,911.58/325,926.78
  6. Step 6: Final answer
    x = 201,027.11

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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.