Home / 213,621.58-320,709.39-142,996.06

Finding the Fourth Proportional to 213,621.58, 320,709.39 and 142,996.06

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Solution

The fourth proportional to 213,621.58, 320,709.39 and 142,996.06 is: 214,679.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,621.58 : 320,709.39 = 142,996.06 : x
  2. Step 2: Convert to fraction form
    213,621.58/320,709.39 = 142,996.06/x
  3. Step 3: Cross multiply
    213,621.58x = 320,709.39 × 142,996.06
  4. Step 4: Simplify right side
    213,621.58x = 45,860,179,175.00
  5. Step 5: Solve for x
    x = 45,860,179,175.00/213,621.58
  6. Step 6: Final answer
    x = 214,679.52

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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.