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Finding the Fourth Proportional to 321,607.98, 443,851.44 and 178,395.96

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Solution

The fourth proportional to 321,607.98, 443,851.44 and 178,395.96 is: 246,204.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,607.98 : 443,851.44 = 178,395.96 : x
  2. Step 2: Convert to fraction form
    321,607.98/443,851.44 = 178,395.96/x
  3. Step 3: Cross multiply
    321,607.98x = 443,851.44 × 178,395.96
  4. Step 4: Simplify right side
    321,607.98x = 79,181,303,736.18
  5. Step 5: Solve for x
    x = 79,181,303,736.18/321,607.98
  6. Step 6: Final answer
    x = 246,204.41

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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.