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Finding the Fourth Proportional to 326,144.07, 449,662.19 and 211,219.65

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Solution

The fourth proportional to 326,144.07, 449,662.19 and 211,219.65 is: 291,213.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,144.07 : 449,662.19 = 211,219.65 : x
  2. Step 2: Convert to fraction form
    326,144.07/449,662.19 = 211,219.65/x
  3. Step 3: Cross multiply
    326,144.07x = 449,662.19 × 211,219.65
  4. Step 4: Simplify right side
    326,144.07x = 94,977,489,333.94
  5. Step 5: Solve for x
    x = 94,977,489,333.94/326,144.07
  6. Step 6: Final answer
    x = 291,213.30

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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.