Finding the Fourth Proportional to 306,138.60, 459,207.90 and 221,501.70
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Solution
The fourth proportional to 306,138.60, 459,207.90 and 221,501.70 is: 332,252.55
Step by Step Solution
- Step 1: Write the proportion equation
306,138.60 : 459,207.90 = 221,501.70 : x - Step 2: Convert to fraction form
306,138.60/459,207.90 = 221,501.70/x - Step 3: Cross multiply
306,138.60x = 459,207.90 × 221,501.70 - Step 4: Simplify right side
306,138.60x = 101,715,330,503.43 - Step 5: Solve for x
x = 101,715,330,503.43/306,138.60 - Step 6: Final answer
x = 332,252.55
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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.