Home / 213,261.37-321,157.62-189,904.21

Finding the Fourth Proportional to 213,261.37, 321,157.62 and 189,904.21

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Solution

The fourth proportional to 213,261.37, 321,157.62 and 189,904.21 is: 285,983.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,261.37 : 321,157.62 = 189,904.21 : x
  2. Step 2: Convert to fraction form
    213,261.37/321,157.62 = 189,904.21/x
  3. Step 3: Cross multiply
    213,261.37x = 321,157.62 × 189,904.21
  4. Step 4: Simplify right side
    213,261.37x = 60,989,184,111.58
  5. Step 5: Solve for x
    x = 60,989,184,111.58/213,261.37
  6. Step 6: Final answer
    x = 285,983.27

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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.