Finding the Fourth Proportional to 352,087.70, 528,287.07 and 142,135.70
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Solution
The fourth proportional to 352,087.70, 528,287.07 and 142,135.70 is: 213,266.33
Step by Step Solution
- Step 1: Write the proportion equation
352,087.70 : 528,287.07 = 142,135.70 : x - Step 2: Convert to fraction form
352,087.70/528,287.07 = 142,135.70/x - Step 3: Cross multiply
352,087.70x = 528,287.07 × 142,135.70 - Step 4: Simplify right side
352,087.70x = 75,088,452,495.40 - Step 5: Solve for x
x = 75,088,452,495.40/352,087.70 - Step 6: Final answer
x = 213,266.33
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.