Finding the Fourth Proportional to 280,608.80, 420,913.20 and 168,415.70
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Solution
The fourth proportional to 280,608.80, 420,913.20 and 168,415.70 is: 252,623.55
Step by Step Solution
- Step 1: Write the proportion equation
280,608.80 : 420,913.20 = 168,415.70 : x - Step 2: Convert to fraction form
280,608.80/420,913.20 = 168,415.70/x - Step 3: Cross multiply
280,608.80x = 420,913.20 × 168,415.70 - Step 4: Simplify right side
280,608.80x = 70,888,391,217.24 - Step 5: Solve for x
x = 70,888,391,217.24/280,608.80 - Step 6: Final answer
x = 252,623.55
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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.