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Finding the Fourth Proportional to 326,608.42, 489,786.66 and 126,902.50

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Solution

The fourth proportional to 326,608.42, 489,786.66 and 126,902.50 is: 190,304.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,608.42 : 489,786.66 = 126,902.50 : x
  2. Step 2: Convert to fraction form
    326,608.42/489,786.66 = 126,902.50/x
  3. Step 3: Cross multiply
    326,608.42x = 489,786.66 × 126,902.50
  4. Step 4: Simplify right side
    326,608.42x = 62,155,151,620.65
  5. Step 5: Solve for x
    x = 62,155,151,620.65/326,608.42
  6. Step 6: Final answer
    x = 190,304.80

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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.