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Finding the Fourth Proportional to 321,804.84, 444,172.26 and 219,871.47

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Solution

The fourth proportional to 321,804.84, 444,172.26 and 219,871.47 is: 303,478.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,804.84 : 444,172.26 = 219,871.47 : x
  2. Step 2: Convert to fraction form
    321,804.84/444,172.26 = 219,871.47/x
  3. Step 3: Cross multiply
    321,804.84x = 444,172.26 × 219,871.47
  4. Step 4: Simplify right side
    321,804.84x = 97,660,807,739.42
  5. Step 5: Solve for x
    x = 97,660,807,739.42/321,804.84
  6. Step 6: Final answer
    x = 303,478.37

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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.