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Finding the Fourth Proportional to 326,940.72, 490,490.12 and 113,677.85

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Solution

The fourth proportional to 326,940.72, 490,490.12 and 113,677.85 is: 170,544.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,940.72 : 490,490.12 = 113,677.85 : x
  2. Step 2: Convert to fraction form
    326,940.72/490,490.12 = 113,677.85/x
  3. Step 3: Cross multiply
    326,940.72x = 490,490.12 × 113,677.85
  4. Step 4: Simplify right side
    326,940.72x = 55,757,860,119.59
  5. Step 5: Solve for x
    x = 55,757,860,119.59/326,940.72
  6. Step 6: Final answer
    x = 170,544.25

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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.