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Finding the Fourth Proportional to 393,055, 589,707.08 and 140,329.96

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Solution

The fourth proportional to 393,055, 589,707.08 and 140,329.96 is: 210,539.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,055 : 589,707.08 = 140,329.96 : x
  2. Step 2: Convert to fraction form
    393,055/589,707.08 = 140,329.96/x
  3. Step 3: Cross multiply
    393,055x = 589,707.08 × 140,329.96
  4. Step 4: Simplify right side
    393,055x = 82,753,570,948.12
  5. Step 5: Solve for x
    x = 82,753,570,948.12/393,055
  6. Step 6: Final answer
    x = 210,539.42

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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.