Finding the Fourth Proportional to 386,416.74, 579,791.97 and 209,048.70
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Solution
The fourth proportional to 386,416.74, 579,791.97 and 209,048.70 is: 313,663.32
Step by Step Solution
- Step 1: Write the proportion equation
386,416.74 : 579,791.97 = 209,048.70 : x - Step 2: Convert to fraction form
386,416.74/579,791.97 = 209,048.70/x - Step 3: Cross multiply
386,416.74x = 579,791.97 × 209,048.70 - Step 4: Simplify right side
386,416.74x = 121,204,757,598.94 - Step 5: Solve for x
x = 121,204,757,598.94/386,416.74 - Step 6: Final answer
x = 313,663.32
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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.