Finding the Fourth Proportional to 311,122.20, 465,905.70 and 205,368.60
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Solution
The fourth proportional to 311,122.20, 465,905.70 and 205,368.60 is: 307,539.61
Step by Step Solution
- Step 1: Write the proportion equation
311,122.20 : 465,905.70 = 205,368.60 : x - Step 2: Convert to fraction form
311,122.20/465,905.70 = 205,368.60/x - Step 3: Cross multiply
311,122.20x = 465,905.70 × 205,368.60 - Step 4: Simplify right side
311,122.20x = 95,682,401,341.02 - Step 5: Solve for x
x = 95,682,401,341.02/311,122.20 - Step 6: Final answer
x = 307,539.61
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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.