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Finding the Fourth Proportional to 225,819, 311,629.75 and 130,325.70

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Solution

The fourth proportional to 225,819, 311,629.75 and 130,325.70 is: 179,849.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,819 : 311,629.75 = 130,325.70 : x
  2. Step 2: Convert to fraction form
    225,819/311,629.75 = 130,325.70/x
  3. Step 3: Cross multiply
    225,819x = 311,629.75 × 130,325.70
  4. Step 4: Simplify right side
    225,819x = 40,613,363,099.80
  5. Step 5: Solve for x
    x = 40,613,363,099.80/225,819
  6. Step 6: Final answer
    x = 179,849.18

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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.