Home / 321,788.52-481,982.62-216,138.60

Finding the Fourth Proportional to 321,788.52, 481,982.62 and 216,138.60

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Solution

The fourth proportional to 321,788.52, 481,982.62 and 216,138.60 is: 323,737.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,788.52 : 481,982.62 = 216,138.60 : x
  2. Step 2: Convert to fraction form
    321,788.52/481,982.62 = 216,138.60/x
  3. Step 3: Cross multiply
    321,788.52x = 481,982.62 × 216,138.60
  4. Step 4: Simplify right side
    321,788.52x = 104,175,048,711.13
  5. Step 5: Solve for x
    x = 104,175,048,711.13/321,788.52
  6. Step 6: Final answer
    x = 323,737.62

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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.