Finding the Fourth Proportional to 431,180.89, 646,721.79 and 115,612.99
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Solution
The fourth proportional to 431,180.89, 646,721.79 and 115,612.99 is: 173,406.20
Step by Step Solution
- Step 1: Write the proportion equation
431,180.89 : 646,721.79 = 115,612.99 : x - Step 2: Convert to fraction form
431,180.89/646,721.79 = 115,612.99/x - Step 3: Cross multiply
431,180.89x = 646,721.79 × 115,612.99 - Step 4: Simplify right side
431,180.89x = 74,769,439,840.05 - Step 5: Solve for x
x = 74,769,439,840.05/431,180.89 - Step 6: Final answer
x = 173,406.20
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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.