Finding the Fourth Proportional to 212,838.24, 319,454.88 and 107,731.68
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Solution
The fourth proportional to 212,838.24, 319,454.88 and 107,731.68 is: 161,697.50
Step by Step Solution
- Step 1: Write the proportion equation
212,838.24 : 319,454.88 = 107,731.68 : x - Step 2: Convert to fraction form
212,838.24/319,454.88 = 107,731.68/x - Step 3: Cross multiply
212,838.24x = 319,454.88 × 107,731.68 - Step 4: Simplify right side
212,838.24x = 34,415,410,906.60 - Step 5: Solve for x
x = 34,415,410,906.60/212,838.24 - Step 6: Final answer
x = 161,697.50
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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.