Finding the Fourth Proportional to 306,512.10, 459,768.15 and 221,875.20
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Solution
The fourth proportional to 306,512.10, 459,768.15 and 221,875.20 is: 332,812.80
Step by Step Solution
- Step 1: Write the proportion equation
306,512.10 : 459,768.15 = 221,875.20 : x - Step 2: Convert to fraction form
306,512.10/459,768.15 = 221,875.20/x - Step 3: Cross multiply
306,512.10x = 459,768.15 × 221,875.20 - Step 4: Simplify right side
306,512.10x = 102,011,150,234.88 - Step 5: Solve for x
x = 102,011,150,234.88/306,512.10 - Step 6: Final answer
x = 332,812.80
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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.