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Finding the Fourth Proportional to 358,700.43, 494,969.97 and 220,857.47

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Solution

The fourth proportional to 358,700.43, 494,969.97 and 220,857.47 is: 304,760.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,700.43 : 494,969.97 = 220,857.47 : x
  2. Step 2: Convert to fraction form
    358,700.43/494,969.97 = 220,857.47/x
  3. Step 3: Cross multiply
    358,700.43x = 494,969.97 × 220,857.47
  4. Step 4: Simplify right side
    358,700.43x = 109,317,812,825.33
  5. Step 5: Solve for x
    x = 109,317,812,825.33/358,700.43
  6. Step 6: Final answer
    x = 304,760.75

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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.