Finding the Fourth Proportional to 386,963.81, 533,992.10 and 214,892.70
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Solution
The fourth proportional to 386,963.81, 533,992.10 and 214,892.70 is: 296,541.95
Step by Step Solution
- Step 1: Write the proportion equation
386,963.81 : 533,992.10 = 214,892.70 : x - Step 2: Convert to fraction form
386,963.81/533,992.10 = 214,892.70/x - Step 3: Cross multiply
386,963.81x = 533,992.10 × 214,892.70 - Step 4: Simplify right side
386,963.81x = 114,751,003,073.21 - Step 5: Solve for x
x = 114,751,003,073.21/386,963.81 - Step 6: Final answer
x = 296,541.95
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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.