Home / 311,868.70-430,386.66-191,076.60

Finding the Fourth Proportional to 311,868.70, 430,386.66 and 191,076.60

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Solution

The fourth proportional to 311,868.70, 430,386.66 and 191,076.60 is: 263,690.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,868.70 : 430,386.66 = 191,076.60 : x
  2. Step 2: Convert to fraction form
    311,868.70/430,386.66 = 191,076.60/x
  3. Step 3: Cross multiply
    311,868.70x = 430,386.66 × 191,076.60
  4. Step 4: Simplify right side
    311,868.70x = 82,236,819,678.16
  5. Step 5: Solve for x
    x = 82,236,819,678.16/311,868.70
  6. Step 6: Final answer
    x = 263,690.52

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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.