Finding the Fourth Proportional to 235,728.50, 325,312.20 and 128,305.49
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Solution
The fourth proportional to 235,728.50, 325,312.20 and 128,305.49 is: 177,065.31
Step by Step Solution
- Step 1: Write the proportion equation
235,728.50 : 325,312.20 = 128,305.49 : x - Step 2: Convert to fraction form
235,728.50/325,312.20 = 128,305.49/x - Step 3: Cross multiply
235,728.50x = 325,312.20 × 128,305.49 - Step 4: Simplify right side
235,728.50x = 41,739,339,597.42 - Step 5: Solve for x
x = 41,739,339,597.42/235,728.50 - Step 6: Final answer
x = 177,065.31
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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.