Finding the Fourth Proportional to 235,971.05, 325,638.39 and 128,541.09
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Solution
The fourth proportional to 235,971.05, 325,638.39 and 128,541.09 is: 177,385.80
Step by Step Solution
- Step 1: Write the proportion equation
235,971.05 : 325,638.39 = 128,541.09 : x - Step 2: Convert to fraction form
235,971.05/325,638.39 = 128,541.09/x - Step 3: Cross multiply
235,971.05x = 325,638.39 × 128,541.09 - Step 4: Simplify right side
235,971.05x = 41,857,912,461.00 - Step 5: Solve for x
x = 41,857,912,461.00/235,971.05 - Step 6: Final answer
x = 177,385.80
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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.