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Finding the Fourth Proportional to 321,964.40, 483,011.40 and 269,735.60

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Solution

The fourth proportional to 321,964.40, 483,011.40 and 269,735.60 is: 404,657.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,964.40 : 483,011.40 = 269,735.60 : x
  2. Step 2: Convert to fraction form
    321,964.40/483,011.40 = 269,735.60/x
  3. Step 3: Cross multiply
    321,964.40x = 483,011.40 × 269,735.60
  4. Step 4: Simplify right side
    321,964.40x = 130,285,369,785.84
  5. Step 5: Solve for x
    x = 130,285,369,785.84/321,964.40
  6. Step 6: Final answer
    x = 404,657.69

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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.