Finding the Fourth Proportional to 312,436.71, 431,161.99 and 169,196.31
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Solution
The fourth proportional to 312,436.71, 431,161.99 and 169,196.31 is: 233,490.55
Step by Step Solution
- Step 1: Write the proportion equation
312,436.71 : 431,161.99 = 169,196.31 : x - Step 2: Convert to fraction form
312,436.71/431,161.99 = 169,196.31/x - Step 3: Cross multiply
312,436.71x = 431,161.99 × 169,196.31 - Step 4: Simplify right side
312,436.71x = 72,951,017,720.26 - Step 5: Solve for x
x = 72,951,017,720.26/312,436.71 - Step 6: Final answer
x = 233,490.55
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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.