Finding the Fourth Proportional to 225,484.68, 311,091.60 and 128,618.94
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Solution
The fourth proportional to 225,484.68, 311,091.60 and 128,618.94 is: 177,450.07
Step by Step Solution
- Step 1: Write the proportion equation
225,484.68 : 311,091.60 = 128,618.94 : x - Step 2: Convert to fraction form
225,484.68/311,091.60 = 128,618.94/x - Step 3: Cross multiply
225,484.68x = 311,091.60 × 128,618.94 - Step 4: Simplify right side
225,484.68x = 40,012,271,834.90 - Step 5: Solve for x
x = 40,012,271,834.90/225,484.68 - Step 6: Final answer
x = 177,450.07
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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.