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Finding the Fourth Proportional to 392,759.69, 589,173.21 and 108,450.23

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Solution

The fourth proportional to 392,759.69, 589,173.21 and 108,450.23 is: 162,684.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,759.69 : 589,173.21 = 108,450.23 : x
  2. Step 2: Convert to fraction form
    392,759.69/589,173.21 = 108,450.23/x
  3. Step 3: Cross multiply
    392,759.69x = 589,173.21 × 108,450.23
  4. Step 4: Simplify right side
    392,759.69x = 63,895,967,188.47
  5. Step 5: Solve for x
    x = 63,895,967,188.47/392,759.69
  6. Step 6: Final answer
    x = 162,684.64

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1.5x scale

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.