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Finding the Fourth Proportional to 445,992.72, 668,963.16 and 326,171.04

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Solution

The fourth proportional to 445,992.72, 668,963.16 and 326,171.04 is: 489,237.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,992.72 : 668,963.16 = 326,171.04 : x
  2. Step 2: Convert to fraction form
    445,992.72/668,963.16 = 326,171.04/x
  3. Step 3: Cross multiply
    445,992.72x = 668,963.16 × 326,171.04
  4. Step 4: Simplify right side
    445,992.72x = 218,196,409,618.89
  5. Step 5: Solve for x
    x = 218,196,409,618.89/445,992.72
  6. Step 6: Final answer
    x = 489,237.60

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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.