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Finding the Fourth Proportional to 327,779.76, 491,280.84 and 140,395.44

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Solution

The fourth proportional to 327,779.76, 491,280.84 and 140,395.44 is: 210,426.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,779.76 : 491,280.84 = 140,395.44 : x
  2. Step 2: Convert to fraction form
    327,779.76/491,280.84 = 140,395.44/x
  3. Step 3: Cross multiply
    327,779.76x = 491,280.84 × 140,395.44
  4. Step 4: Simplify right side
    327,779.76x = 68,973,589,695.37
  5. Step 5: Solve for x
    x = 68,973,589,695.37/327,779.76
  6. Step 6: Final answer
    x = 210,426.63

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1.5x scale

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.