Finding the Fourth Proportional to 225,995.13, 311,870.12 and 129,197.84
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Solution
The fourth proportional to 225,995.13, 311,870.12 and 129,197.84 is: 178,291.20
Step by Step Solution
- Step 1: Write the proportion equation
225,995.13 : 311,870.12 = 129,197.84 : x - Step 2: Convert to fraction form
225,995.13/311,870.12 = 129,197.84/x - Step 3: Cross multiply
225,995.13x = 311,870.12 × 129,197.84 - Step 4: Simplify right side
225,995.13x = 40,292,943,659.20 - Step 5: Solve for x
x = 40,292,943,659.20/225,995.13 - Step 6: Final answer
x = 178,291.20
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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.