Finding the Fourth Proportional to 305,387.06, 421,434.24 and 171,251.06
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Solution
The fourth proportional to 305,387.06, 421,434.24 and 171,251.06 is: 236,326.52
Step by Step Solution
- Step 1: Write the proportion equation
305,387.06 : 421,434.24 = 171,251.06 : x - Step 2: Convert to fraction form
305,387.06/421,434.24 = 171,251.06/x - Step 3: Cross multiply
305,387.06x = 421,434.24 × 171,251.06 - Step 4: Simplify right side
305,387.06x = 72,171,060,320.29 - Step 5: Solve for x
x = 72,171,060,320.29/305,387.06 - Step 6: Final answer
x = 236,326.52
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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.