Finding the Fourth Proportional to 386,721.44, 533,675.84 and 214,639.47
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Solution
The fourth proportional to 386,721.44, 533,675.84 and 214,639.47 is: 296,202.61
Step by Step Solution
- Step 1: Write the proportion equation
386,721.44 : 533,675.84 = 214,639.47 : x - Step 2: Convert to fraction form
386,721.44/533,675.84 = 214,639.47/x - Step 3: Cross multiply
386,721.44x = 533,675.84 × 214,639.47 - Step 4: Simplify right side
386,721.44x = 114,547,899,583.55 - Step 5: Solve for x
x = 114,547,899,583.55/386,721.44 - Step 6: Final answer
x = 296,202.61
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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.