Home / 321,321.76-443,424.02-178,103.32

Finding the Fourth Proportional to 321,321.76, 443,424.02 and 178,103.32

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Solution

The fourth proportional to 321,321.76, 443,424.02 and 178,103.32 is: 245,782.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,321.76 : 443,424.02 = 178,103.32 : x
  2. Step 2: Convert to fraction form
    321,321.76/443,424.02 = 178,103.32/x
  3. Step 3: Cross multiply
    321,321.76x = 443,424.02 × 178,103.32
  4. Step 4: Simplify right side
    321,321.76x = 78,975,290,129.75
  5. Step 5: Solve for x
    x = 78,975,290,129.75/321,321.76
  6. Step 6: Final answer
    x = 245,782.58

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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.