Finding the Fourth Proportional to 225,760.41, 311,558.91 and 128,980.19
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Solution
The fourth proportional to 225,760.41, 311,558.91 and 128,980.19 is: 177,998.12
Step by Step Solution
- Step 1: Write the proportion equation
225,760.41 : 311,558.91 = 128,980.19 : x - Step 2: Convert to fraction form
225,760.41/311,558.91 = 128,980.19/x - Step 3: Cross multiply
225,760.41x = 311,558.91 × 128,980.19 - Step 4: Simplify right side
225,760.41x = 40,184,927,703.21 - Step 5: Solve for x
x = 40,184,927,703.21/225,760.41 - Step 6: Final answer
x = 177,998.12
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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.