Finding the Fourth Proportional to 385,173.88, 531,538.14 and 215,408.68
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Solution
The fourth proportional to 385,173.88, 531,538.14 and 215,408.68 is: 297,262.96
Step by Step Solution
- Step 1: Write the proportion equation
385,173.88 : 531,538.14 = 215,408.68 : x - Step 2: Convert to fraction form
385,173.88/531,538.14 = 215,408.68/x - Step 3: Cross multiply
385,173.88x = 531,538.14 × 215,408.68 - Step 4: Simplify right side
385,173.88x = 114,497,929,107.06 - Step 5: Solve for x
x = 114,497,929,107.06/385,173.88 - Step 6: Final answer
x = 297,262.96
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.