Home / 311,784.72-430,160.94-190,799.88

Finding the Fourth Proportional to 311,784.72, 430,160.94 and 190,799.88

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Solution

The fourth proportional to 311,784.72, 430,160.94 and 190,799.88 is: 263,241.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,784.72 : 430,160.94 = 190,799.88 : x
  2. Step 2: Convert to fraction form
    311,784.72/430,160.94 = 190,799.88/x
  3. Step 3: Cross multiply
    311,784.72x = 430,160.94 × 190,799.88
  4. Step 4: Simplify right side
    311,784.72x = 82,074,655,732.69
  5. Step 5: Solve for x
    x = 82,074,655,732.69/311,784.72
  6. Step 6: Final answer
    x = 263,241.43

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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.