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Finding the Fourth Proportional to 311,570.36, 467,355.32 and 74,912.98

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Solution

The fourth proportional to 311,570.36, 467,355.32 and 74,912.98 is: 112,369.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,570.36 : 467,355.32 = 74,912.98 : x
  2. Step 2: Convert to fraction form
    311,570.36/467,355.32 = 74,912.98/x
  3. Step 3: Cross multiply
    311,570.36x = 467,355.32 × 74,912.98
  4. Step 4: Simplify right side
    311,570.36x = 35,010,979,740.05
  5. Step 5: Solve for x
    x = 35,010,979,740.05/311,570.36
  6. Step 6: Final answer
    x = 112,369.42

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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.