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Finding the Fourth Proportional to 321,845.60, 483,286.80 and 243,048.80

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Solution

The fourth proportional to 321,845.60, 483,286.80 and 243,048.80 is: 364,964.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,845.60 : 483,286.80 = 243,048.80 : x
  2. Step 2: Convert to fraction form
    321,845.60/483,286.80 = 243,048.80/x
  3. Step 3: Cross multiply
    321,845.60x = 483,286.80 × 243,048.80
  4. Step 4: Simplify right side
    321,845.60x = 117,462,276,795.84
  5. Step 5: Solve for x
    x = 117,462,276,795.84/321,845.60
  6. Step 6: Final answer
    x = 364,964.68

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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.