Home / 393,131.25-589,821.62-140,406.39

Finding the Fourth Proportional to 393,131.25, 589,821.62 and 140,406.39

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Solution

The fourth proportional to 393,131.25, 589,821.62 and 140,406.39 is: 210,654.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,131.25 : 589,821.62 = 140,406.39 : x
  2. Step 2: Convert to fraction form
    393,131.25/589,821.62 = 140,406.39/x
  3. Step 3: Cross multiply
    393,131.25x = 589,821.62 × 140,406.39
  4. Step 4: Simplify right side
    393,131.25x = 82,814,723,706.12
  5. Step 5: Solve for x
    x = 82,814,723,706.12/393,131.25
  6. Step 6: Final answer
    x = 210,654.14

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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.