Finding the Fourth Proportional to 305,432.13, 421,546.91 and 169,509.74
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Solution
The fourth proportional to 305,432.13, 421,546.91 and 169,509.74 is: 233,951.51
Step by Step Solution
- Step 1: Write the proportion equation
305,432.13 : 421,546.91 = 169,509.74 : x - Step 2: Convert to fraction form
305,432.13/421,546.91 = 169,509.74/x - Step 3: Cross multiply
305,432.13x = 421,546.91 × 169,509.74 - Step 4: Simplify right side
305,432.13x = 71,456,307,111.90 - Step 5: Solve for x
x = 71,456,307,111.90/305,432.13 - Step 6: Final answer
x = 233,951.51
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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.