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Finding the Fourth Proportional to 326,644.65, 489,735.32 and 126,796.59

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Solution

The fourth proportional to 326,644.65, 489,735.32 and 126,796.59 is: 190,104.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,644.65 : 489,735.32 = 126,796.59 : x
  2. Step 2: Convert to fraction form
    326,644.65/489,735.32 = 126,796.59/x
  3. Step 3: Cross multiply
    326,644.65x = 489,735.32 × 126,796.59
  4. Step 4: Simplify right side
    326,644.65x = 62,096,767,944.58
  5. Step 5: Solve for x
    x = 62,096,767,944.58/326,644.65
  6. Step 6: Final answer
    x = 190,104.96

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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.