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Finding the Fourth Proportional to 400,982.54, 601,431.44 and 211,366.91

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Solution

The fourth proportional to 400,982.54, 601,431.44 and 211,366.91 is: 317,028.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,982.54 : 601,431.44 = 211,366.91 : x
  2. Step 2: Convert to fraction form
    400,982.54/601,431.44 = 211,366.91/x
  3. Step 3: Cross multiply
    400,982.54x = 601,431.44 × 211,366.91
  4. Step 4: Simplify right side
    400,982.54x = 127,122,703,992.82
  5. Step 5: Solve for x
    x = 127,122,703,992.82/400,982.54
  6. Step 6: Final answer
    x = 317,028.03

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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.