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Finding the Fourth Proportional to 321,118.40, 481,821.60 and 110,907.20

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Solution

The fourth proportional to 321,118.40, 481,821.60 and 110,907.20 is: 166,410.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,118.40 : 481,821.60 = 110,907.20 : x
  2. Step 2: Convert to fraction form
    321,118.40/481,821.60 = 110,907.20/x
  3. Step 3: Cross multiply
    321,118.40x = 481,821.60 × 110,907.20
  4. Step 4: Simplify right side
    321,118.40x = 53,437,484,555.52
  5. Step 5: Solve for x
    x = 53,437,484,555.52/321,118.40
  6. Step 6: Final answer
    x = 166,410.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.