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Finding the Fourth Proportional to 327,638.40, 491,457.60 and 161,750.40

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Solution

The fourth proportional to 327,638.40, 491,457.60 and 161,750.40 is: 242,625.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,638.40 : 491,457.60 = 161,750.40 : x
  2. Step 2: Convert to fraction form
    327,638.40/491,457.60 = 161,750.40/x
  3. Step 3: Cross multiply
    327,638.40x = 491,457.60 × 161,750.40
  4. Step 4: Simplify right side
    327,638.40x = 79,493,463,383.04
  5. Step 5: Solve for x
    x = 79,493,463,383.04/327,638.40
  6. Step 6: Final answer
    x = 242,625.60

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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.