Finding the Fourth Proportional to 306,068.10, 459,102.15 and 221,431.20
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Solution
The fourth proportional to 306,068.10, 459,102.15 and 221,431.20 is: 332,146.80
Step by Step Solution
- Step 1: Write the proportion equation
306,068.10 : 459,102.15 = 221,431.20 : x - Step 2: Convert to fraction form
306,068.10/459,102.15 = 221,431.20/x - Step 3: Cross multiply
306,068.10x = 459,102.15 × 221,431.20 - Step 4: Simplify right side
306,068.10x = 101,659,539,997.08 - Step 5: Solve for x
x = 101,659,539,997.08/306,068.10 - Step 6: Final answer
x = 332,146.80
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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.