Finding the Fourth Proportional to 381,721.07, 526,817.18 and 218,392.74
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Solution
The fourth proportional to 381,721.07, 526,817.18 and 218,392.74 is: 301,406.07
Step by Step Solution
- Step 1: Write the proportion equation
381,721.07 : 526,817.18 = 218,392.74 : x - Step 2: Convert to fraction form
381,721.07/526,817.18 = 218,392.74/x - Step 3: Cross multiply
381,721.07x = 526,817.18 × 218,392.74 - Step 4: Simplify right side
381,721.07x = 115,053,047,965.26 - Step 5: Solve for x
x = 115,053,047,965.26/381,721.07 - Step 6: Final answer
x = 301,406.07
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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.