Finding the Fourth Proportional to 282,449.28, 389,799.09 and 155,126.19
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Solution
The fourth proportional to 282,449.28, 389,799.09 and 155,126.19 is: 214,084.62
Step by Step Solution
- Step 1: Write the proportion equation
282,449.28 : 389,799.09 = 155,126.19 : x - Step 2: Convert to fraction form
282,449.28/389,799.09 = 155,126.19/x - Step 3: Cross multiply
282,449.28x = 389,799.09 × 155,126.19 - Step 4: Simplify right side
282,449.28x = 60,468,047,697.17 - Step 5: Solve for x
x = 60,468,047,697.17/282,449.28 - Step 6: Final answer
x = 214,084.62
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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.