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Finding the Fourth Proportional to 321,673.23, 443,962.31 and 178,479.41

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Solution

The fourth proportional to 321,673.23, 443,962.31 and 178,479.41 is: 246,331.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,673.23 : 443,962.31 = 178,479.41 : x
  2. Step 2: Convert to fraction form
    321,673.23/443,962.31 = 178,479.41/x
  3. Step 3: Cross multiply
    321,673.23x = 443,962.31 × 178,479.41
  4. Step 4: Simplify right side
    321,673.23x = 79,238,128,038.83
  5. Step 5: Solve for x
    x = 79,238,128,038.83/321,673.23
  6. Step 6: Final answer
    x = 246,331.12

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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.