Finding the Fourth Proportional to 212,533.88, 318,013.36 and 156,415.44
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Solution
The fourth proportional to 212,533.88, 318,013.36 and 156,415.44 is: 234,043.62
Step by Step Solution
- Step 1: Write the proportion equation
212,533.88 : 318,013.36 = 156,415.44 : x - Step 2: Convert to fraction form
212,533.88/318,013.36 = 156,415.44/x - Step 3: Cross multiply
212,533.88x = 318,013.36 × 156,415.44 - Step 4: Simplify right side
212,533.88x = 49,742,199,630.28 - Step 5: Solve for x
x = 49,742,199,630.28/212,533.88 - Step 6: Final answer
x = 234,043.62
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1.5x scale
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.