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Finding the Fourth Proportional to 326,620.86, 489,936.20 and 113,395.54

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Solution

The fourth proportional to 326,620.86, 489,936.20 and 113,395.54 is: 170,095.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,620.86 : 489,936.20 = 113,395.54 : x
  2. Step 2: Convert to fraction form
    326,620.86/489,936.20 = 113,395.54/x
  3. Step 3: Cross multiply
    326,620.86x = 489,936.20 × 113,395.54
  4. Step 4: Simplify right side
    326,620.86x = 55,556,579,964.55
  5. Step 5: Solve for x
    x = 55,556,579,964.55/326,620.86
  6. Step 6: Final answer
    x = 170,095.01

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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.