Finding the Fourth Proportional to 212,083.44, 318,163.80 and 87,356.40
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Solution
The fourth proportional to 212,083.44, 318,163.80 and 87,356.40 is: 131,050.52
Step by Step Solution
- Step 1: Write the proportion equation
212,083.44 : 318,163.80 = 87,356.40 : x - Step 2: Convert to fraction form
212,083.44/318,163.80 = 87,356.40/x - Step 3: Cross multiply
212,083.44x = 318,163.80 × 87,356.40 - Step 4: Simplify right side
212,083.44x = 27,793,644,178.32 - Step 5: Solve for x
x = 27,793,644,178.32/212,083.44 - Step 6: Final answer
x = 131,050.52
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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.