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Finding the Fourth Proportional to 323,460.87, 484,453.18 and 285,620.37

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Solution

The fourth proportional to 323,460.87, 484,453.18 and 285,620.37 is: 427,778.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,460.87 : 484,453.18 = 285,620.37 : x
  2. Step 2: Convert to fraction form
    323,460.87/484,453.18 = 285,620.37/x
  3. Step 3: Cross multiply
    323,460.87x = 484,453.18 × 285,620.37
  4. Step 4: Simplify right side
    323,460.87x = 138,369,696,519.28
  5. Step 5: Solve for x
    x = 138,369,696,519.28/323,460.87
  6. Step 6: Final answer
    x = 427,778.78

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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.