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Finding the Fourth Proportional to 483,246.82, 666,859.03 and 289,761.33

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Solution

The fourth proportional to 483,246.82, 666,859.03 and 289,761.33 is: 399,857.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,246.82 : 666,859.03 = 289,761.33 : x
  2. Step 2: Convert to fraction form
    483,246.82/666,859.03 = 289,761.33/x
  3. Step 3: Cross multiply
    483,246.82x = 666,859.03 × 289,761.33
  4. Step 4: Simplify right side
    483,246.82x = 193,229,959,455.31
  5. Step 5: Solve for x
    x = 193,229,959,455.31/483,246.82
  6. Step 6: Final answer
    x = 399,857.69

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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.