Home / 393,416.28-589,979.82-140,628.54

Finding the Fourth Proportional to 393,416.28, 589,979.82 and 140,628.54

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Solution

The fourth proportional to 393,416.28, 589,979.82 and 140,628.54 is: 210,891.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,416.28 : 589,979.82 = 140,628.54 : x
  2. Step 2: Convert to fraction form
    393,416.28/589,979.82 = 140,628.54/x
  3. Step 3: Cross multiply
    393,416.28x = 589,979.82 × 140,628.54
  4. Step 4: Simplify right side
    393,416.28x = 82,968,000,716.06
  5. Step 5: Solve for x
    x = 82,968,000,716.06/393,416.28
  6. Step 6: Final answer
    x = 210,891.12

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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.