Finding the Fourth Proportional to 384,906.70, 531,156.99 and 215,143.66
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Solution
The fourth proportional to 384,906.70, 531,156.99 and 215,143.66 is: 296,890.28
Step by Step Solution
- Step 1: Write the proportion equation
384,906.70 : 531,156.99 = 215,143.66 : x - Step 2: Convert to fraction form
384,906.70/531,156.99 = 215,143.66/x - Step 3: Cross multiply
384,906.70x = 531,156.99 × 215,143.66 - Step 4: Simplify right side
384,906.70x = 114,275,058,863.18 - Step 5: Solve for x
x = 114,275,058,863.18/384,906.70 - Step 6: Final answer
x = 296,890.28
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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.