Finding the Fourth Proportional to 204,625.80, 306,938.70 and 86,430.60
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Solution
The fourth proportional to 204,625.80, 306,938.70 and 86,430.60 is: 129,645.90
Step by Step Solution
- Step 1: Write the proportion equation
204,625.80 : 306,938.70 = 86,430.60 : x - Step 2: Convert to fraction form
204,625.80/306,938.70 = 86,430.60/x - Step 3: Cross multiply
204,625.80x = 306,938.70 × 86,430.60 - Step 4: Simplify right side
204,625.80x = 26,528,896,004.22 - Step 5: Solve for x
x = 26,528,896,004.22/204,625.80 - Step 6: Final answer
x = 129,645.90
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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.