Finding the Fourth Proportional to 207,220.01, 310,867.59 and 85,640.75
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Solution
The fourth proportional to 207,220.01, 310,867.59 and 85,640.75 is: 128,476.65
Step by Step Solution
- Step 1: Write the proportion equation
207,220.01 : 310,867.59 = 85,640.75 : x - Step 2: Convert to fraction form
207,220.01/310,867.59 = 85,640.75/x - Step 3: Cross multiply
207,220.01x = 310,867.59 × 85,640.75 - Step 4: Simplify right side
207,220.01x = 26,622,932,003.95 - Step 5: Solve for x
x = 26,622,932,003.95/207,220.01 - Step 6: Final answer
x = 128,476.65
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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.