Finding the Fourth Proportional to 306,500.10, 459,750.15 and 212,021.70
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Solution
The fourth proportional to 306,500.10, 459,750.15 and 212,021.70 is: 318,032.55
Step by Step Solution
- Step 1: Write the proportion equation
306,500.10 : 459,750.15 = 212,021.70 : x - Step 2: Convert to fraction form
306,500.10/459,750.15 = 212,021.70/x - Step 3: Cross multiply
306,500.10x = 459,750.15 × 212,021.70 - Step 4: Simplify right side
306,500.10x = 97,477,008,378.26 - Step 5: Solve for x
x = 97,477,008,378.26/306,500.10 - Step 6: Final answer
x = 318,032.55
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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.