Finding the Fourth Proportional to 386,573.49, 579,721.29 and 133,785.36
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Solution
The fourth proportional to 386,573.49, 579,721.29 and 133,785.36 is: 200,629.95
Step by Step Solution
- Step 1: Write the proportion equation
386,573.49 : 579,721.29 = 133,785.36 : x - Step 2: Convert to fraction form
386,573.49/579,721.29 = 133,785.36/x - Step 3: Cross multiply
386,573.49x = 579,721.29 × 133,785.36 - Step 4: Simplify right side
386,573.49x = 77,558,221,482.31 - Step 5: Solve for x
x = 77,558,221,482.31/386,573.49 - Step 6: Final answer
x = 200,629.95
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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.