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Finding the Fourth Proportional to 352,908.73, 487,013.12 and 191,763.78

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Solution

The fourth proportional to 352,908.73, 487,013.12 and 191,763.78 is: 264,633.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,908.73 : 487,013.12 = 191,763.78 : x
  2. Step 2: Convert to fraction form
    352,908.73/487,013.12 = 191,763.78/x
  3. Step 3: Cross multiply
    352,908.73x = 487,013.12 × 191,763.78
  4. Step 4: Simplify right side
    352,908.73x = 93,391,475,841.97
  5. Step 5: Solve for x
    x = 93,391,475,841.97/352,908.73
  6. Step 6: Final answer
    x = 264,633.51

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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.