Finding the Fourth Proportional to 515,220.12, 772,640.63 and 178,174.26
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Solution
The fourth proportional to 515,220.12, 772,640.63 and 178,174.26 is: 267,195.84
Step by Step Solution
- Step 1: Write the proportion equation
515,220.12 : 772,640.63 = 178,174.26 : x - Step 2: Convert to fraction form
515,220.12/772,640.63 = 178,174.26/x - Step 3: Cross multiply
515,220.12x = 772,640.63 × 178,174.26 - Step 4: Simplify right side
515,220.12x = 137,664,672,273.47 - Step 5: Solve for x
x = 137,664,672,273.47/515,220.12 - Step 6: Final answer
x = 267,195.84
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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.