Finding the Fourth Proportional to 371,390.13, 512,640.36 and 218,421.63
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Solution
The fourth proportional to 371,390.13, 512,640.36 and 218,421.63 is: 301,493.59
Step by Step Solution
- Step 1: Write the proportion equation
371,390.13 : 512,640.36 = 218,421.63 : x - Step 2: Convert to fraction form
371,390.13/512,640.36 = 218,421.63/x - Step 3: Cross multiply
371,390.13x = 512,640.36 × 218,421.63 - Step 4: Simplify right side
371,390.13x = 111,971,743,034.99 - Step 5: Solve for x
x = 111,971,743,034.99/371,390.13 - Step 6: Final answer
x = 301,493.59
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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.