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Finding the Fourth Proportional to 392,680.98, 589,021.47 and 112,198.23

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Solution

The fourth proportional to 392,680.98, 589,021.47 and 112,198.23 is: 168,297.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,680.98 : 589,021.47 = 112,198.23 : x
  2. Step 2: Convert to fraction form
    392,680.98/589,021.47 = 112,198.23/x
  3. Step 3: Cross multiply
    392,680.98x = 589,021.47 × 112,198.23
  4. Step 4: Simplify right side
    392,680.98x = 66,087,166,366.00
  5. Step 5: Solve for x
    x = 66,087,166,366.00/392,680.98
  6. Step 6: Final answer
    x = 168,297.35

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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.