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Finding the Fourth Proportional to 327,959.60, 449,632.20 and 321,980.88

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Solution

The fourth proportional to 327,959.60, 449,632.20 and 321,980.88 is: 441,435.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,959.60 : 449,632.20 = 321,980.88 : x
  2. Step 2: Convert to fraction form
    327,959.60/449,632.20 = 321,980.88/x
  3. Step 3: Cross multiply
    327,959.60x = 449,632.20 × 321,980.88
  4. Step 4: Simplify right side
    327,959.60x = 144,772,971,432.34
  5. Step 5: Solve for x
    x = 144,772,971,432.34/327,959.60
  6. Step 6: Final answer
    x = 441,435.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.