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Finding the Fourth Proportional to 311,625.90, 467,438.85 and 192,912.30

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Solution

The fourth proportional to 311,625.90, 467,438.85 and 192,912.30 is: 289,368.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,625.90 : 467,438.85 = 192,912.30 : x
  2. Step 2: Convert to fraction form
    311,625.90/467,438.85 = 192,912.30/x
  3. Step 3: Cross multiply
    311,625.90x = 467,438.85 × 192,912.30
  4. Step 4: Simplify right side
    311,625.90x = 90,174,703,662.86
  5. Step 5: Solve for x
    x = 90,174,703,662.86/311,625.90
  6. Step 6: Final answer
    x = 289,368.45

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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.