Finding the Fourth Proportional to 352,138.07, 528,207.11 and 85,896.79
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Solution
The fourth proportional to 352,138.07, 528,207.11 and 85,896.79 is: 128,845.19
Step by Step Solution
- Step 1: Write the proportion equation
352,138.07 : 528,207.11 = 85,896.79 : x - Step 2: Convert to fraction form
352,138.07/528,207.11 = 85,896.79/x - Step 3: Cross multiply
352,138.07x = 528,207.11 × 85,896.79 - Step 4: Simplify right side
352,138.07x = 45,371,295,204.18 - Step 5: Solve for x
x = 45,371,295,204.18/352,138.07 - Step 6: Final answer
x = 128,845.19
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1.5x scale
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.