Home / 239,942.13-331,120.14-139,346.61

Finding the Fourth Proportional to 239,942.13, 331,120.14 and 139,346.61

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Solution

The fourth proportional to 239,942.13, 331,120.14 and 139,346.61 is: 192,298.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,942.13 : 331,120.14 = 139,346.61 : x
  2. Step 2: Convert to fraction form
    239,942.13/331,120.14 = 139,346.61/x
  3. Step 3: Cross multiply
    239,942.13x = 331,120.14 × 139,346.61
  4. Step 4: Simplify right side
    239,942.13x = 46,140,466,659.39
  5. Step 5: Solve for x
    x = 46,140,466,659.39/239,942.13
  6. Step 6: Final answer
    x = 192,298.32

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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.