Finding the Fourth Proportional to 235,415.20, 353,122.80 and 142,103.20
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Solution
The fourth proportional to 235,415.20, 353,122.80 and 142,103.20 is: 213,154.80
Step by Step Solution
- Step 1: Write the proportion equation
235,415.20 : 353,122.80 = 142,103.20 : x - Step 2: Convert to fraction form
235,415.20/353,122.80 = 142,103.20/x - Step 3: Cross multiply
235,415.20x = 353,122.80 × 142,103.20 - Step 4: Simplify right side
235,415.20x = 50,179,879,872.96 - Step 5: Solve for x
x = 50,179,879,872.96/235,415.20 - Step 6: Final answer
x = 213,154.80
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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.