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Finding the Fourth Proportional to 328,393.11, 491,851.53 and 199,961.54

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Solution

The fourth proportional to 328,393.11, 491,851.53 and 199,961.54 is: 299,492.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,393.11 : 491,851.53 = 199,961.54 : x
  2. Step 2: Convert to fraction form
    328,393.11/491,851.53 = 199,961.54/x
  3. Step 3: Cross multiply
    328,393.11x = 491,851.53 × 199,961.54
  4. Step 4: Simplify right side
    328,393.11x = 98,351,386,930.90
  5. Step 5: Solve for x
    x = 98,351,386,930.90/328,393.11
  6. Step 6: Final answer
    x = 299,492.85

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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.