Home / 225,495.08-311,065.23-139,426.55

Finding the Fourth Proportional to 225,495.08, 311,065.23 and 139,426.55

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Solution

The fourth proportional to 225,495.08, 311,065.23 and 139,426.55 is: 192,335.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,495.08 : 311,065.23 = 139,426.55 : x
  2. Step 2: Convert to fraction form
    225,495.08/311,065.23 = 139,426.55/x
  3. Step 3: Cross multiply
    225,495.08x = 311,065.23 × 139,426.55
  4. Step 4: Simplify right side
    225,495.08x = 43,370,751,843.86
  5. Step 5: Solve for x
    x = 43,370,751,843.86/225,495.08
  6. Step 6: Final answer
    x = 192,335.69

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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.