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Finding the Fourth Proportional to 351,707.54, 485,345.10 and 200,804.54

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Solution

The fourth proportional to 351,707.54, 485,345.10 and 200,804.54 is: 277,103.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,707.54 : 485,345.10 = 200,804.54 : x
  2. Step 2: Convert to fraction form
    351,707.54/485,345.10 = 200,804.54/x
  3. Step 3: Cross multiply
    351,707.54x = 485,345.10 × 200,804.54
  4. Step 4: Simplify right side
    351,707.54x = 97,459,499,546.75
  5. Step 5: Solve for x
    x = 97,459,499,546.75/351,707.54
  6. Step 6: Final answer
    x = 277,103.81

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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.