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Finding the Fourth Proportional to 351,993.40, 485,817.87 and 208,832.38

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Solution

The fourth proportional to 351,993.40, 485,817.87 and 208,832.38 is: 288,228.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,993.40 : 485,817.87 = 208,832.38 : x
  2. Step 2: Convert to fraction form
    351,993.40/485,817.87 = 208,832.38/x
  3. Step 3: Cross multiply
    351,993.40x = 485,817.87 × 208,832.38
  4. Step 4: Simplify right side
    351,993.40x = 101,454,502,731.09
  5. Step 5: Solve for x
    x = 101,454,502,731.09/351,993.40
  6. Step 6: Final answer
    x = 288,228.42

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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.