Finding the Fourth Proportional to 386,020.08, 579,107.42 and 133,309.80
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Solution
The fourth proportional to 386,020.08, 579,107.42 and 133,309.80 is: 199,991.40
Step by Step Solution
- Step 1: Write the proportion equation
386,020.08 : 579,107.42 = 133,309.80 : x - Step 2: Convert to fraction form
386,020.08/579,107.42 = 133,309.80/x - Step 3: Cross multiply
386,020.08x = 579,107.42 × 133,309.80 - Step 4: Simplify right side
386,020.08x = 77,200,694,921.95 - Step 5: Solve for x
x = 77,200,694,921.95/386,020.08 - Step 6: Final answer
x = 199,991.40
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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.