Finding the Fourth Proportional to 227,116.99, 313,418.94 and 128,999.54
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Solution
The fourth proportional to 227,116.99, 313,418.94 and 128,999.54 is: 178,017.94
Step by Step Solution
- Step 1: Write the proportion equation
227,116.99 : 313,418.94 = 128,999.54 : x - Step 2: Convert to fraction form
227,116.99/313,418.94 = 128,999.54/x - Step 3: Cross multiply
227,116.99x = 313,418.94 × 128,999.54 - Step 4: Simplify right side
227,116.99x = 40,430,898,442.29 - Step 5: Solve for x
x = 40,430,898,442.29/227,116.99 - Step 6: Final answer
x = 178,017.94
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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.