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Finding the Fourth Proportional to 431,638.12, 647,748.06 and 151,157.80

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Solution

The fourth proportional to 431,638.12, 647,748.06 and 151,157.80 is: 226,838.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,638.12 : 647,748.06 = 151,157.80 : x
  2. Step 2: Convert to fraction form
    431,638.12/647,748.06 = 151,157.80/x
  3. Step 3: Cross multiply
    431,638.12x = 647,748.06 × 151,157.80
  4. Step 4: Simplify right side
    431,638.12x = 97,912,171,703.87
  5. Step 5: Solve for x
    x = 97,912,171,703.87/431,638.12
  6. Step 6: Final answer
    x = 226,838.56

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