Home / 213,260.37-321,156.11-189,903.21

Finding the Fourth Proportional to 213,260.37, 321,156.11 and 189,903.21

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Solution

The fourth proportional to 213,260.37, 321,156.11 and 189,903.21 is: 285,981.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,260.37 : 321,156.11 = 189,903.21 : x
  2. Step 2: Convert to fraction form
    213,260.37/321,156.11 = 189,903.21/x
  3. Step 3: Cross multiply
    213,260.37x = 321,156.11 × 189,903.21
  4. Step 4: Simplify right side
    213,260.37x = 60,988,576,200.11
  5. Step 5: Solve for x
    x = 60,988,576,200.11/213,260.37
  6. Step 6: Final answer
    x = 285,981.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.