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Finding the Fourth Proportional to 351,712.54, 485,352 and 200,809.54

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Solution

The fourth proportional to 351,712.54, 485,352 and 200,809.54 is: 277,110.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,712.54 : 485,352 = 200,809.54 : x
  2. Step 2: Convert to fraction form
    351,712.54/485,352 = 200,809.54/x
  3. Step 3: Cross multiply
    351,712.54x = 485,352 × 200,809.54
  4. Step 4: Simplify right side
    351,712.54x = 97,463,311,858.08
  5. Step 5: Solve for x
    x = 97,463,311,858.08/351,712.54
  6. Step 6: Final answer
    x = 277,110.71

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1.5x scale

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.