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Finding the Fourth Proportional to 379,851.28, 568,904.52 and 189,728.08

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Solution

The fourth proportional to 379,851.28, 568,904.52 and 189,728.08 is: 284,156.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,851.28 : 568,904.52 = 189,728.08 : x
  2. Step 2: Convert to fraction form
    379,851.28/568,904.52 = 189,728.08/x
  3. Step 3: Cross multiply
    379,851.28x = 568,904.52 × 189,728.08
  4. Step 4: Simplify right side
    379,851.28x = 107,937,162,282.92
  5. Step 5: Solve for x
    x = 107,937,162,282.92/379,851.28
  6. Step 6: Final answer
    x = 284,156.37

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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.