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Finding the Fourth Proportional to 397,245.80, 595,868.70 and 131,047.40

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Solution

The fourth proportional to 397,245.80, 595,868.70 and 131,047.40 is: 196,571.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,245.80 : 595,868.70 = 131,047.40 : x
  2. Step 2: Convert to fraction form
    397,245.80/595,868.70 = 131,047.40/x
  3. Step 3: Cross multiply
    397,245.80x = 595,868.70 × 131,047.40
  4. Step 4: Simplify right side
    397,245.80x = 78,087,043,876.38
  5. Step 5: Solve for x
    x = 78,087,043,876.38/397,245.80
  6. Step 6: Final answer
    x = 196,571.10

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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.