Finding the Fourth Proportional to 289,639.60, 434,459.64 and 79,279.28
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Solution
The fourth proportional to 289,639.60, 434,459.64 and 79,279.28 is: 118,918.99
Step by Step Solution
- Step 1: Write the proportion equation
289,639.60 : 434,459.64 = 79,279.28 : x - Step 2: Convert to fraction form
289,639.60/434,459.64 = 79,279.28/x - Step 3: Cross multiply
289,639.60x = 434,459.64 × 79,279.28 - Step 4: Simplify right side
289,639.60x = 34,443,647,448.26 - Step 5: Solve for x
x = 34,443,647,448.26/289,639.60 - Step 6: Final answer
x = 118,918.99
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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.