Finding the Fourth Proportional to 283,256.49, 390,892.94 and 155,932.09
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Solution
The fourth proportional to 283,256.49, 390,892.94 and 155,932.09 is: 215,185.72
Step by Step Solution
- Step 1: Write the proportion equation
283,256.49 : 390,892.94 = 155,932.09 : x - Step 2: Convert to fraction form
283,256.49/390,892.94 = 155,932.09/x - Step 3: Cross multiply
283,256.49x = 390,892.94 × 155,932.09 - Step 4: Simplify right side
283,256.49x = 60,952,751,928.30 - Step 5: Solve for x
x = 60,952,751,928.30/283,256.49 - Step 6: Final answer
x = 215,185.72
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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.