Finding the Fourth Proportional to 211,990.05, 317,787.44 and 71,650.53
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Solution
The fourth proportional to 211,990.05, 317,787.44 and 71,650.53 is: 107,408.99
Step by Step Solution
- Step 1: Write the proportion equation
211,990.05 : 317,787.44 = 71,650.53 : x - Step 2: Convert to fraction form
211,990.05/317,787.44 = 71,650.53/x - Step 3: Cross multiply
211,990.05x = 317,787.44 × 71,650.53 - Step 4: Simplify right side
211,990.05x = 22,769,638,145.09 - Step 5: Solve for x
x = 22,769,638,145.09/211,990.05 - Step 6: Final answer
x = 107,408.99
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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.