Finding the Fourth Proportional to 284,655.78, 427,057.68 and 84,976.20
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Solution
The fourth proportional to 284,655.78, 427,057.68 and 84,976.20 is: 127,486.39
Step by Step Solution
- Step 1: Write the proportion equation
284,655.78 : 427,057.68 = 84,976.20 : x - Step 2: Convert to fraction form
284,655.78/427,057.68 = 84,976.20/x - Step 3: Cross multiply
284,655.78x = 427,057.68 × 84,976.20 - Step 4: Simplify right side
284,655.78x = 36,289,738,827.22 - Step 5: Solve for x
x = 36,289,738,827.22/284,655.78 - Step 6: Final answer
x = 127,486.39
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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.