Finding the Fourth Proportional to 379,386.84, 523,552.77 and 209,619.75
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Solution
The fourth proportional to 379,386.84, 523,552.77 and 209,619.75 is: 289,274.66
Step by Step Solution
- Step 1: Write the proportion equation
379,386.84 : 523,552.77 = 209,619.75 : x - Step 2: Convert to fraction form
379,386.84/523,552.77 = 209,619.75/x - Step 3: Cross multiply
379,386.84x = 523,552.77 × 209,619.75 - Step 4: Simplify right side
379,386.84x = 109,747,000,759.21 - Step 5: Solve for x
x = 109,747,000,759.21/379,386.84 - Step 6: Final answer
x = 289,274.66
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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.