Finding the Fourth Proportional to 235,896.72, 325,543.68 and 128,471.28
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Solution
The fourth proportional to 235,896.72, 325,543.68 and 128,471.28 is: 177,293.75
Step by Step Solution
- Step 1: Write the proportion equation
235,896.72 : 325,543.68 = 128,471.28 : x - Step 2: Convert to fraction form
235,896.72/325,543.68 = 128,471.28/x - Step 3: Cross multiply
235,896.72x = 325,543.68 × 128,471.28 - Step 4: Simplify right side
235,896.72x = 41,823,013,265.51 - Step 5: Solve for x
x = 41,823,013,265.51/235,896.72 - Step 6: Final answer
x = 177,293.75
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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.