Finding the Fourth Proportional to 305,529.75, 421,631.06 and 171,393.75
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Solution
The fourth proportional to 305,529.75, 421,631.06 and 171,393.75 is: 236,523.38
Step by Step Solution
- Step 1: Write the proportion equation
305,529.75 : 421,631.06 = 171,393.75 : x - Step 2: Convert to fraction form
305,529.75/421,631.06 = 171,393.75/x - Step 3: Cross multiply
305,529.75x = 421,631.06 × 171,393.75 - Step 4: Simplify right side
305,529.75x = 72,264,927,632.91 - Step 5: Solve for x
x = 72,264,927,632.91/305,529.75 - Step 6: Final answer
x = 236,523.38
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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.