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Finding the Fourth Proportional to 624,644.20, 936,735.90 and 203,933.80

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Solution

The fourth proportional to 624,644.20, 936,735.90 and 203,933.80 is: 305,825.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,644.20 : 936,735.90 = 203,933.80 : x
  2. Step 2: Convert to fraction form
    624,644.20/936,735.90 = 203,933.80/x
  3. Step 3: Cross multiply
    624,644.20x = 936,735.90 × 203,933.80
  4. Step 4: Simplify right side
    624,644.20x = 191,032,111,683.42
  5. Step 5: Solve for x
    x = 191,032,111,683.42/624,644.20
  6. Step 6: Final answer
    x = 305,825.48

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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.