Finding the Fourth Proportional to 379,386.18, 523,536.21 and 209,616.66
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Solution
The fourth proportional to 379,386.18, 523,536.21 and 209,616.66 is: 289,261.75
Step by Step Solution
- Step 1: Write the proportion equation
379,386.18 : 523,536.21 = 209,616.66 : x - Step 2: Convert to fraction form
379,386.18/523,536.21 = 209,616.66/x - Step 3: Cross multiply
379,386.18x = 523,536.21 × 209,616.66 - Step 4: Simplify right side
379,386.18x = 109,741,911,729.26 - Step 5: Solve for x
x = 109,741,911,729.26/379,386.18 - Step 6: Final answer
x = 289,261.75
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.