Finding the Fourth Proportional to 235,918.84, 325,571.71 and 128,488.79
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Solution
The fourth proportional to 235,918.84, 325,571.71 and 128,488.79 is: 177,316.55
Step by Step Solution
- Step 1: Write the proportion equation
235,918.84 : 325,571.71 = 128,488.79 : x - Step 2: Convert to fraction form
235,918.84/325,571.71 = 128,488.79/x - Step 3: Cross multiply
235,918.84x = 325,571.71 × 128,488.79 - Step 4: Simplify right side
235,918.84x = 41,832,315,076.13 - Step 5: Solve for x
x = 41,832,315,076.13/235,918.84 - Step 6: Final answer
x = 177,316.55
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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.