Finding the Fourth Proportional to 235,718.34, 325,285.08 and 128,286.09
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Solution
The fourth proportional to 235,718.34, 325,285.08 and 128,286.09 is: 177,031.41
Step by Step Solution
- Step 1: Write the proportion equation
235,718.34 : 325,285.08 = 128,286.09 : x - Step 2: Convert to fraction form
235,718.34/325,285.08 = 128,286.09/x - Step 3: Cross multiply
235,718.34x = 325,285.08 × 128,286.09 - Step 4: Simplify right side
235,718.34x = 41,729,551,048.54 - Step 5: Solve for x
x = 41,729,551,048.54/235,718.34 - Step 6: Final answer
x = 177,031.41
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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.