Finding the Fourth Proportional to 235,631.97, 325,173.54 and 128,202.78
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Solution
The fourth proportional to 235,631.97, 325,173.54 and 128,202.78 is: 176,920.61
Step by Step Solution
- Step 1: Write the proportion equation
235,631.97 : 325,173.54 = 128,202.78 : x - Step 2: Convert to fraction form
235,631.97/325,173.54 = 128,202.78/x - Step 3: Cross multiply
235,631.97x = 325,173.54 × 128,202.78 - Step 4: Simplify right side
235,631.97x = 41,688,151,810.44 - Step 5: Solve for x
x = 41,688,151,810.44/235,631.97 - Step 6: Final answer
x = 176,920.61
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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.