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Finding the Fourth Proportional to 321,648.62, 443,810.49 and 194,330.66

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Solution

The fourth proportional to 321,648.62, 443,810.49 and 194,330.66 is: 268,137.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,648.62 : 443,810.49 = 194,330.66 : x
  2. Step 2: Convert to fraction form
    321,648.62/443,810.49 = 194,330.66/x
  3. Step 3: Cross multiply
    321,648.62x = 443,810.49 × 194,330.66
  4. Step 4: Simplify right side
    321,648.62x = 86,245,985,436.62
  5. Step 5: Solve for x
    x = 86,245,985,436.62/321,648.62
  6. Step 6: Final answer
    x = 268,137.28

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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.