Finding the Fourth Proportional to 276,331.40, 381,332.91 and 155,472.62
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Solution
The fourth proportional to 276,331.40, 381,332.91 and 155,472.62 is: 214,549.72
Step by Step Solution
- Step 1: Write the proportion equation
276,331.40 : 381,332.91 = 155,472.62 : x - Step 2: Convert to fraction form
276,331.40/381,332.91 = 155,472.62/x - Step 3: Cross multiply
276,331.40x = 381,332.91 × 155,472.62 - Step 4: Simplify right side
276,331.40x = 59,286,825,286.28 - Step 5: Solve for x
x = 59,286,825,286.28/276,331.40 - Step 6: Final answer
x = 214,549.72
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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.