Finding the Fourth Proportional to 157,447.44, 217,338.12 and 115,340.40
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Solution
The fourth proportional to 157,447.44, 217,338.12 and 115,340.40 is: 159,214.18
Step by Step Solution
- Step 1: Write the proportion equation
157,447.44 : 217,338.12 = 115,340.40 : x - Step 2: Convert to fraction form
157,447.44/217,338.12 = 115,340.40/x - Step 3: Cross multiply
157,447.44x = 217,338.12 × 115,340.40 - Step 4: Simplify right side
157,447.44x = 25,067,865,696.05 - Step 5: Solve for x
x = 25,067,865,696.05/157,447.44 - Step 6: Final answer
x = 159,214.18
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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.