Home / 383,140.82-528,653.43-221,986.05

Finding the Fourth Proportional to 383,140.82, 528,653.43 and 221,986.05

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Solution

The fourth proportional to 383,140.82, 528,653.43 and 221,986.05 is: 306,293.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,140.82 : 528,653.43 = 221,986.05 : x
  2. Step 2: Convert to fraction form
    383,140.82/528,653.43 = 221,986.05/x
  3. Step 3: Cross multiply
    383,140.82x = 528,653.43 × 221,986.05
  4. Step 4: Simplify right side
    383,140.82x = 117,353,686,744.65
  5. Step 5: Solve for x
    x = 117,353,686,744.65/383,140.82
  6. Step 6: Final answer
    x = 306,293.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.