Finding the Fourth Proportional to 486,350.20, 671,145.78 and 305,159.68
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Solution
The fourth proportional to 486,350.20, 671,145.78 and 305,159.68 is: 421,109.38
Step by Step Solution
- Step 1: Write the proportion equation
486,350.20 : 671,145.78 = 305,159.68 : x - Step 2: Convert to fraction form
486,350.20/671,145.78 = 305,159.68/x - Step 3: Cross multiply
486,350.20x = 671,145.78 × 305,159.68 - Step 4: Simplify right side
486,350.20x = 204,806,631,458.15 - Step 5: Solve for x
x = 204,806,631,458.15/486,350.20 - Step 6: Final answer
x = 421,109.38
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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.