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Finding the Fourth Proportional to 447,020.58, 616,879.62 and 243,069.77

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Solution

The fourth proportional to 447,020.58, 616,879.62 and 243,069.77 is: 335,431.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,020.58 : 616,879.62 = 243,069.77 : x
  2. Step 2: Convert to fraction form
    447,020.58/616,879.62 = 243,069.77/x
  3. Step 3: Cross multiply
    447,020.58x = 616,879.62 × 243,069.77
  4. Step 4: Simplify right side
    447,020.58x = 149,944,787,351.09
  5. Step 5: Solve for x
    x = 149,944,787,351.09/447,020.58
  6. Step 6: Final answer
    x = 335,431.51

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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.