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Finding the Fourth Proportional to 659,241.48, 988,956.78 and 203,868.12

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Solution

The fourth proportional to 659,241.48, 988,956.78 and 203,868.12 is: 305,831.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,241.48 : 988,956.78 = 203,868.12 : x
  2. Step 2: Convert to fraction form
    659,241.48/988,956.78 = 203,868.12/x
  3. Step 3: Cross multiply
    659,241.48x = 988,956.78 × 203,868.12
  4. Step 4: Simplify right side
    659,241.48x = 201,616,759,499.85
  5. Step 5: Solve for x
    x = 201,616,759,499.85/659,241.48
  6. Step 6: Final answer
    x = 305,831.42

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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.