Finding the Fourth Proportional to 207,815.28, 286,767.84 and 117,193.68
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Solution
The fourth proportional to 207,815.28, 286,767.84 and 117,193.68 is: 161,717.55
Step by Step Solution
- Step 1: Write the proportion equation
207,815.28 : 286,767.84 = 117,193.68 : x - Step 2: Convert to fraction form
207,815.28/286,767.84 = 117,193.68/x - Step 3: Cross multiply
207,815.28x = 286,767.84 × 117,193.68 - Step 4: Simplify right side
207,815.28x = 33,607,378,475.25 - Step 5: Solve for x
x = 33,607,378,475.25/207,815.28 - Step 6: Final answer
x = 161,717.55
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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.