Finding the Fourth Proportional to 406,618.71, 561,146.12 and 225,313.68
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Solution
The fourth proportional to 406,618.71, 561,146.12 and 225,313.68 is: 310,939.69
Step by Step Solution
- Step 1: Write the proportion equation
406,618.71 : 561,146.12 = 225,313.68 : x - Step 2: Convert to fraction form
406,618.71/561,146.12 = 225,313.68/x - Step 3: Cross multiply
406,618.71x = 561,146.12 × 225,313.68 - Step 4: Simplify right side
406,618.71x = 126,433,897,314.92 - Step 5: Solve for x
x = 126,433,897,314.92/406,618.71 - Step 6: Final answer
x = 310,939.69
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1.5x scale
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.