Finding the Fourth Proportional to 306,000.10, 459,000.15 and 211,521.70
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Solution
The fourth proportional to 306,000.10, 459,000.15 and 211,521.70 is: 317,282.55
Step by Step Solution
- Step 1: Write the proportion equation
306,000.10 : 459,000.15 = 211,521.70 : x - Step 2: Convert to fraction form
306,000.10/459,000.15 = 211,521.70/x - Step 3: Cross multiply
306,000.10x = 459,000.15 × 211,521.70 - Step 4: Simplify right side
306,000.10x = 97,088,492,028.26 - Step 5: Solve for x
x = 97,088,492,028.26/306,000.10 - Step 6: Final answer
x = 317,282.55
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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.