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Finding the Fourth Proportional to 326,255.54, 489,289.34 and 89,605.94

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Solution

The fourth proportional to 326,255.54, 489,289.34 and 89,605.94 is: 134,383.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,255.54 : 489,289.34 = 89,605.94 : x
  2. Step 2: Convert to fraction form
    326,255.54/489,289.34 = 89,605.94/x
  3. Step 3: Cross multiply
    326,255.54x = 489,289.34 × 89,605.94
  4. Step 4: Simplify right side
    326,255.54x = 43,843,229,020.25
  5. Step 5: Solve for x
    x = 43,843,229,020.25/326,255.54
  6. Step 6: Final answer
    x = 134,383.10

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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.