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Finding the Fourth Proportional to 393,906.60, 590,932.80 and 127,675.80

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Solution

The fourth proportional to 393,906.60, 590,932.80 and 127,675.80 is: 191,537.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,906.60 : 590,932.80 = 127,675.80 : x
  2. Step 2: Convert to fraction form
    393,906.60/590,932.80 = 127,675.80/x
  3. Step 3: Cross multiply
    393,906.60x = 590,932.80 × 127,675.80
  4. Step 4: Simplify right side
    393,906.60x = 75,447,817,986.24
  5. Step 5: Solve for x
    x = 75,447,817,986.24/393,906.60
  6. Step 6: Final answer
    x = 191,537.33

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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.