Finding the Fourth Proportional to 223,780.92, 308,824.13 and 121,812.99
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Solution
The fourth proportional to 223,780.92, 308,824.13 and 121,812.99 is: 168,105.44
Step by Step Solution
- Step 1: Write the proportion equation
223,780.92 : 308,824.13 = 121,812.99 : x - Step 2: Convert to fraction form
223,780.92/308,824.13 = 121,812.99/x - Step 3: Cross multiply
223,780.92x = 308,824.13 × 121,812.99 - Step 4: Simplify right side
223,780.92x = 37,618,790,963.98 - Step 5: Solve for x
x = 37,618,790,963.98/223,780.92 - Step 6: Final answer
x = 168,105.44
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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.