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Finding the Fourth Proportional to 665,238.33, 997,843.37 and 215,958.56

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Solution

The fourth proportional to 665,238.33, 997,843.37 and 215,958.56 is: 323,933.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,238.33 : 997,843.37 = 215,958.56 : x
  2. Step 2: Convert to fraction form
    665,238.33/997,843.37 = 215,958.56/x
  3. Step 3: Cross multiply
    665,238.33x = 997,843.37 × 215,958.56
  4. Step 4: Simplify right side
    665,238.33x = 215,492,811,221.74
  5. Step 5: Solve for x
    x = 215,492,811,221.74/665,238.33
  6. Step 6: Final answer
    x = 323,933.25

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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.