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Finding the Fourth Proportional to 290,540.67, 400,983.72 and 163,216.27

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Solution

The fourth proportional to 290,540.67, 400,983.72 and 163,216.27 is: 225,259.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,540.67 : 400,983.72 = 163,216.27 : x
  2. Step 2: Convert to fraction form
    290,540.67/400,983.72 = 163,216.27/x
  3. Step 3: Cross multiply
    290,540.67x = 400,983.72 × 163,216.27
  4. Step 4: Simplify right side
    290,540.67x = 65,447,064,742.76
  5. Step 5: Solve for x
    x = 65,447,064,742.76/290,540.67
  6. Step 6: Final answer
    x = 225,259.56

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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.