Finding the Fourth Proportional to 315,736.75, 473,679.09 and 215,943.94
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Solution
The fourth proportional to 315,736.75, 473,679.09 and 215,943.94 is: 323,966.50
Step by Step Solution
- Step 1: Write the proportion equation
315,736.75 : 473,679.09 = 215,943.94 : x - Step 2: Convert to fraction form
315,736.75/473,679.09 = 215,943.94/x - Step 3: Cross multiply
315,736.75x = 473,679.09 × 215,943.94 - Step 4: Simplify right side
315,736.75x = 102,288,129,582.31 - Step 5: Solve for x
x = 102,288,129,582.31/315,736.75 - Step 6: Final answer
x = 323,966.50
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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.