Finding the Fourth Proportional to 420,891.39, 631,430.37 and 121,348.60
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Solution
The fourth proportional to 420,891.39, 631,430.37 and 121,348.60 is: 182,049.80
Step by Step Solution
- Step 1: Write the proportion equation
420,891.39 : 631,430.37 = 121,348.60 : x - Step 2: Convert to fraction form
420,891.39/631,430.37 = 121,348.60/x - Step 3: Cross multiply
420,891.39x = 631,430.37 × 121,348.60 - Step 4: Simplify right side
420,891.39x = 76,623,191,396.98 - Step 5: Solve for x
x = 76,623,191,396.98/420,891.39 - Step 6: Final answer
x = 182,049.80
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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.