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Finding the Fourth Proportional to 665,383.53, 998,361.27 and 216,242.07

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Solution

The fourth proportional to 665,383.53, 998,361.27 and 216,242.07 is: 324,456.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,383.53 : 998,361.27 = 216,242.07 : x
  2. Step 2: Convert to fraction form
    665,383.53/998,361.27 = 216,242.07/x
  3. Step 3: Cross multiply
    665,383.53x = 998,361.27 × 216,242.07
  4. Step 4: Simplify right side
    665,383.53x = 215,887,707,632.63
  5. Step 5: Solve for x
    x = 215,887,707,632.63/665,383.53
  6. Step 6: Final answer
    x = 324,456.04

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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.