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Finding the Fourth Proportional to 326,583.96, 489,906.92 and 126,919.77

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Solution

The fourth proportional to 326,583.96, 489,906.92 and 126,919.77 is: 190,391.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,583.96 : 489,906.92 = 126,919.77 : x
  2. Step 2: Convert to fraction form
    326,583.96/489,906.92 = 126,919.77/x
  3. Step 3: Cross multiply
    326,583.96x = 489,906.92 × 126,919.77
  4. Step 4: Simplify right side
    326,583.96x = 62,178,873,607.81
  5. Step 5: Solve for x
    x = 62,178,873,607.81/326,583.96
  6. Step 6: Final answer
    x = 190,391.69

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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.