Finding the Fourth Proportional to 386,720.28, 579,941.44 and 133,932.70
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Solution
The fourth proportional to 386,720.28, 579,941.44 and 133,932.70 is: 200,850.92
Step by Step Solution
- Step 1: Write the proportion equation
386,720.28 : 579,941.44 = 133,932.70 : x - Step 2: Convert to fraction form
386,720.28/579,941.44 = 133,932.70/x - Step 3: Cross multiply
386,720.28x = 579,941.44 × 133,932.70 - Step 4: Simplify right side
386,720.28x = 77,673,122,901.09 - Step 5: Solve for x
x = 77,673,122,901.09/386,720.28 - Step 6: Final answer
x = 200,850.92
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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.