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Finding the Fourth Proportional to 311,387.34, 467,115.51 and 133,912.38

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Solution

The fourth proportional to 311,387.34, 467,115.51 and 133,912.38 is: 200,883.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,387.34 : 467,115.51 = 133,912.38 : x
  2. Step 2: Convert to fraction form
    311,387.34/467,115.51 = 133,912.38/x
  3. Step 3: Cross multiply
    311,387.34x = 467,115.51 × 133,912.38
  4. Step 4: Simplify right side
    311,387.34x = 62,552,549,679.01
  5. Step 5: Solve for x
    x = 62,552,549,679.01/311,387.34
  6. Step 6: Final answer
    x = 200,883.41

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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.