Home / 321,621.20-482,028.60-163,912.40

Finding the Fourth Proportional to 321,621.20, 482,028.60 and 163,912.40

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Solution

The fourth proportional to 321,621.20, 482,028.60 and 163,912.40 is: 245,663.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,621.20 : 482,028.60 = 163,912.40 : x
  2. Step 2: Convert to fraction form
    321,621.20/482,028.60 = 163,912.40/x
  3. Step 3: Cross multiply
    321,621.20x = 482,028.60 × 163,912.40
  4. Step 4: Simplify right side
    321,621.20x = 79,010,464,694.64
  5. Step 5: Solve for x
    x = 79,010,464,694.64/321,621.20
  6. Step 6: Final answer
    x = 245,663.11

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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.