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Finding the Fourth Proportional to 321,912, 444,238.56 and 208,735.56

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Solution

The fourth proportional to 321,912, 444,238.56 and 208,735.56 is: 288,055.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,912 : 444,238.56 = 208,735.56 : x
  2. Step 2: Convert to fraction form
    321,912/444,238.56 = 208,735.56/x
  3. Step 3: Cross multiply
    321,912x = 444,238.56 × 208,735.56
  4. Step 4: Simplify right side
    321,912x = 92,728,384,595.19
  5. Step 5: Solve for x
    x = 92,728,384,595.19/321,912
  6. Step 6: Final answer
    x = 288,055.07

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1.5x scale

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.