Home / 221,650.37-305,860.22-130,989.10

Finding the Fourth Proportional to 221,650.37, 305,860.22 and 130,989.10

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Solution

The fourth proportional to 221,650.37, 305,860.22 and 130,989.10 is: 180,754.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,650.37 : 305,860.22 = 130,989.10 : x
  2. Step 2: Convert to fraction form
    221,650.37/305,860.22 = 130,989.10/x
  3. Step 3: Cross multiply
    221,650.37x = 305,860.22 × 130,989.10
  4. Step 4: Simplify right side
    221,650.37x = 40,064,353,414.30
  5. Step 5: Solve for x
    x = 40,064,353,414.30/221,650.37
  6. Step 6: Final answer
    x = 180,754.73

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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.