Finding the Fourth Proportional to 306,090.10, 459,135.15 and 221,453.20
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Solution
The fourth proportional to 306,090.10, 459,135.15 and 221,453.20 is: 332,179.80
Step by Step Solution
- Step 1: Write the proportion equation
306,090.10 : 459,135.15 = 221,453.20 : x - Step 2: Convert to fraction form
306,090.10/459,135.15 = 221,453.20/x - Step 3: Cross multiply
306,090.10x = 459,135.15 × 221,453.20 - Step 4: Simplify right side
306,090.10x = 101,676,948,199.98 - Step 5: Solve for x
x = 101,676,948,199.98/306,090.10 - Step 6: Final answer
x = 332,179.80
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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.