Finding the Fourth Proportional to 215,539.84, 323,309.76 and 75,299.68
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Solution
The fourth proportional to 215,539.84, 323,309.76 and 75,299.68 is: 112,949.52
Step by Step Solution
- Step 1: Write the proportion equation
215,539.84 : 323,309.76 = 75,299.68 : x - Step 2: Convert to fraction form
215,539.84/323,309.76 = 75,299.68/x - Step 3: Cross multiply
215,539.84x = 323,309.76 × 75,299.68 - Step 4: Simplify right side
215,539.84x = 24,345,121,468.88 - Step 5: Solve for x
x = 24,345,121,468.88/215,539.84 - Step 6: Final answer
x = 112,949.52
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Double scale
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Similar ratio
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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.