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Finding the Fourth Proportional to 483,991.11, 667,635.35 and 290,347.29

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Solution

The fourth proportional to 483,991.11, 667,635.35 and 290,347.29 is: 400,515.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,991.11 : 667,635.35 = 290,347.29 : x
  2. Step 2: Convert to fraction form
    483,991.11/667,635.35 = 290,347.29/x
  3. Step 3: Cross multiply
    483,991.11x = 667,635.35 × 290,347.29
  4. Step 4: Simplify right side
    483,991.11x = 193,846,113,128.97
  5. Step 5: Solve for x
    x = 193,846,113,128.97/483,991.11
  6. Step 6: Final answer
    x = 400,515.85

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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.