Home / 311,858.40-430,266.34-190,873.56

Finding the Fourth Proportional to 311,858.40, 430,266.34 and 190,873.56

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Solution

The fourth proportional to 311,858.40, 430,266.34 and 190,873.56 is: 263,345.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,858.40 : 430,266.34 = 190,873.56 : x
  2. Step 2: Convert to fraction form
    311,858.40/430,266.34 = 190,873.56/x
  3. Step 3: Cross multiply
    311,858.40x = 430,266.34 × 190,873.56
  4. Step 4: Simplify right side
    311,858.40x = 82,126,465,912.64
  5. Step 5: Solve for x
    x = 82,126,465,912.64/311,858.40
  6. Step 6: Final answer
    x = 263,345.37

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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.