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Finding the Fourth Proportional to 321,396.60, 481,619.72 and 303,423.60

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Solution

The fourth proportional to 321,396.60, 481,619.72 and 303,423.60 is: 454,686.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,396.60 : 481,619.72 = 303,423.60 : x
  2. Step 2: Convert to fraction form
    321,396.60/481,619.72 = 303,423.60/x
  3. Step 3: Cross multiply
    321,396.60x = 481,619.72 × 303,423.60
  4. Step 4: Simplify right side
    321,396.60x = 146,134,789,273.39
  5. Step 5: Solve for x
    x = 146,134,789,273.39/321,396.60
  6. Step 6: Final answer
    x = 454,686.79

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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.