Finding the Fourth Proportional to 406,989.09, 561,646.17 and 225,717.75
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Solution
The fourth proportional to 406,989.09, 561,646.17 and 225,717.75 is: 311,491.17
Step by Step Solution
- Step 1: Write the proportion equation
406,989.09 : 561,646.17 = 225,717.75 : x - Step 2: Convert to fraction form
406,989.09/561,646.17 = 225,717.75/x - Step 3: Cross multiply
406,989.09x = 561,646.17 × 225,717.75 - Step 4: Simplify right side
406,989.09x = 126,773,509,788.52 - Step 5: Solve for x
x = 126,773,509,788.52/406,989.09 - Step 6: Final answer
x = 311,491.17
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.