Finding the Fourth Proportional to 235,679.16, 325,236.64 and 128,249.17
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Solution
The fourth proportional to 235,679.16, 325,236.64 and 128,249.17 is: 176,983.52
Step by Step Solution
- Step 1: Write the proportion equation
235,679.16 : 325,236.64 = 128,249.17 : x - Step 2: Convert to fraction form
235,679.16/325,236.64 = 128,249.17/x - Step 3: Cross multiply
235,679.16x = 325,236.64 × 128,249.17 - Step 4: Simplify right side
235,679.16x = 41,711,327,999.87 - Step 5: Solve for x
x = 41,711,327,999.87/235,679.16 - Step 6: Final answer
x = 176,983.52
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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.