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Finding the Fourth Proportional to 321,958.40, 483,002.40 and 269,729.60

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Solution

The fourth proportional to 321,958.40, 483,002.40 and 269,729.60 is: 404,648.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,958.40 : 483,002.40 = 269,729.60 : x
  2. Step 2: Convert to fraction form
    321,958.40/483,002.40 = 269,729.60/x
  3. Step 3: Cross multiply
    321,958.40x = 483,002.40 × 269,729.60
  4. Step 4: Simplify right side
    321,958.40x = 130,280,044,151.04
  5. Step 5: Solve for x
    x = 130,280,044,151.04/321,958.40
  6. Step 6: Final answer
    x = 404,648.69

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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.