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Finding the Fourth Proportional to 321,598.20, 443,832.08 and 178,404.40

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Solution

The fourth proportional to 321,598.20, 443,832.08 and 178,404.40 is: 246,212.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,598.20 : 443,832.08 = 178,404.40 : x
  2. Step 2: Convert to fraction form
    321,598.20/443,832.08 = 178,404.40/x
  3. Step 3: Cross multiply
    321,598.20x = 443,832.08 × 178,404.40
  4. Step 4: Simplify right side
    321,598.20x = 79,181,595,933.15
  5. Step 5: Solve for x
    x = 79,181,595,933.15/321,598.20
  6. Step 6: Final answer
    x = 246,212.81

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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.