Home / 321,231.15-443,298.56-178,000.47

Finding the Fourth Proportional to 321,231.15, 443,298.56 and 178,000.47

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Solution

The fourth proportional to 321,231.15, 443,298.56 and 178,000.47 is: 245,640.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,231.15 : 443,298.56 = 178,000.47 : x
  2. Step 2: Convert to fraction form
    321,231.15/443,298.56 = 178,000.47/x
  3. Step 3: Cross multiply
    321,231.15x = 443,298.56 × 178,000.47
  4. Step 4: Simplify right side
    321,231.15x = 78,907,351,140.32
  5. Step 5: Solve for x
    x = 78,907,351,140.32/321,231.15
  6. Step 6: Final answer
    x = 245,640.41

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1.5x scale

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.