Finding the Fourth Proportional to 235,728.80, 325,305.75 and 128,299.62
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Solution
The fourth proportional to 235,728.80, 325,305.75 and 128,299.62 is: 177,053.48
Step by Step Solution
- Step 1: Write the proportion equation
235,728.80 : 325,305.75 = 128,299.62 : x - Step 2: Convert to fraction form
235,728.80/325,305.75 = 128,299.62/x - Step 3: Cross multiply
235,728.80x = 325,305.75 × 128,299.62 - Step 4: Simplify right side
235,728.80x = 41,736,604,108.82 - Step 5: Solve for x
x = 41,736,604,108.82/235,728.80 - Step 6: Final answer
x = 177,053.48
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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.