Finding the Fourth Proportional to 547,408.20, 821,106.60 and 173,431.20
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Solution
The fourth proportional to 547,408.20, 821,106.60 and 173,431.20 is: 260,144.99
Step by Step Solution
- Step 1: Write the proportion equation
547,408.20 : 821,106.60 = 173,431.20 : x - Step 2: Convert to fraction form
547,408.20/821,106.60 = 173,431.20/x - Step 3: Cross multiply
547,408.20x = 821,106.60 × 173,431.20 - Step 4: Simplify right side
547,408.20x = 142,405,502,965.92 - Step 5: Solve for x
x = 142,405,502,965.92/547,408.20 - Step 6: Final answer
x = 260,144.99
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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.