Finding the Fourth Proportional to 386,359.91, 579,628.20 and 133,640.21
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Solution
The fourth proportional to 386,359.91, 579,628.20 and 133,640.21 is: 200,490.88
Step by Step Solution
- Step 1: Write the proportion equation
386,359.91 : 579,628.20 = 133,640.21 : x - Step 2: Convert to fraction form
386,359.91/579,628.20 = 133,640.21/x - Step 3: Cross multiply
386,359.91x = 579,628.20 × 133,640.21 - Step 4: Simplify right side
386,359.91x = 77,461,636,320.14 - Step 5: Solve for x
x = 77,461,636,320.14/386,359.91 - Step 6: Final answer
x = 200,490.88
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.