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Finding the Fourth Proportional to 326,179.80, 449,711.34 and 211,255.32

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Solution

The fourth proportional to 326,179.80, 449,711.34 and 211,255.32 is: 291,262.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,179.80 : 449,711.34 = 211,255.32 : x
  2. Step 2: Convert to fraction form
    326,179.80/449,711.34 = 211,255.32/x
  3. Step 3: Cross multiply
    326,179.80x = 449,711.34 × 211,255.32
  4. Step 4: Simplify right side
    326,179.80x = 95,003,913,039.33
  5. Step 5: Solve for x
    x = 95,003,913,039.33/326,179.80
  6. Step 6: Final answer
    x = 291,262.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.