Finding the Fourth Proportional to 386,220.74, 579,456.86 and 186,564.05
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Solution
The fourth proportional to 386,220.74, 579,456.86 and 186,564.05 is: 279,906.81
Step by Step Solution
- Step 1: Write the proportion equation
386,220.74 : 579,456.86 = 186,564.05 : x - Step 2: Convert to fraction form
386,220.74/579,456.86 = 186,564.05/x - Step 3: Cross multiply
386,220.74x = 579,456.86 × 186,564.05 - Step 4: Simplify right side
386,220.74x = 108,105,814,771.78 - Step 5: Solve for x
x = 108,105,814,771.78/386,220.74 - Step 6: Final answer
x = 279,906.81
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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.