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Finding the Fourth Proportional to 321,040.40, 443,030.31 and 177,797.36

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Solution

The fourth proportional to 321,040.40, 443,030.31 and 177,797.36 is: 245,357.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,040.40 : 443,030.31 = 177,797.36 : x
  2. Step 2: Convert to fraction form
    321,040.40/443,030.31 = 177,797.36/x
  3. Step 3: Cross multiply
    321,040.40x = 443,030.31 × 177,797.36
  4. Step 4: Simplify right side
    321,040.40x = 78,769,620,625.56
  5. Step 5: Solve for x
    x = 78,769,620,625.56/321,040.40
  6. Step 6: Final answer
    x = 245,357.35

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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.