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Finding the Fourth Proportional to 326,376.96, 489,171.78 and 168,519.30

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Solution

The fourth proportional to 326,376.96, 489,171.78 and 168,519.30 is: 252,575.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,376.96 : 489,171.78 = 168,519.30 : x
  2. Step 2: Convert to fraction form
    326,376.96/489,171.78 = 168,519.30/x
  3. Step 3: Cross multiply
    326,376.96x = 489,171.78 × 168,519.30
  4. Step 4: Simplify right side
    326,376.96x = 82,434,885,945.35
  5. Step 5: Solve for x
    x = 82,434,885,945.35/326,376.96
  6. Step 6: Final answer
    x = 252,575.69

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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.