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Finding the Fourth Proportional to 311,564.21, 467,346.31 and 74,906.89

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Solution

The fourth proportional to 311,564.21, 467,346.31 and 74,906.89 is: 112,360.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,564.21 : 467,346.31 = 74,906.89 : x
  2. Step 2: Convert to fraction form
    311,564.21/467,346.31 = 74,906.89/x
  3. Step 3: Cross multiply
    311,564.21x = 467,346.31 × 74,906.89
  4. Step 4: Simplify right side
    311,564.21x = 35,007,456,576.44
  5. Step 5: Solve for x
    x = 35,007,456,576.44/311,564.21
  6. Step 6: Final answer
    x = 112,360.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.