Finding the Fourth Proportional to 236,369.36, 326,191.80 and 128,939.84
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Solution
The fourth proportional to 236,369.36, 326,191.80 and 128,939.84 is: 177,938.12
Step by Step Solution
- Step 1: Write the proportion equation
236,369.36 : 326,191.80 = 128,939.84 : x - Step 2: Convert to fraction form
236,369.36/326,191.80 = 128,939.84/x - Step 3: Cross multiply
236,369.36x = 326,191.80 × 128,939.84 - Step 4: Simplify right side
236,369.36x = 42,059,118,501.31 - Step 5: Solve for x
x = 42,059,118,501.31/236,369.36 - Step 6: Final answer
x = 177,938.12
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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.