Finding the Fourth Proportional to 235,969.17, 325,638.05 and 128,539.99
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Solution
The fourth proportional to 235,969.17, 325,638.05 and 128,539.99 is: 177,385.50
Step by Step Solution
- Step 1: Write the proportion equation
235,969.17 : 325,638.05 = 128,539.99 : x - Step 2: Convert to fraction form
235,969.17/325,638.05 = 128,539.99/x - Step 3: Cross multiply
235,969.17x = 325,638.05 × 128,539.99 - Step 4: Simplify right side
235,969.17x = 41,857,510,900.63 - Step 5: Solve for x
x = 41,857,510,900.63/235,969.17 - Step 6: Final answer
x = 177,385.50
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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.