Finding the Fourth Proportional to 276,390.74, 381,414.76 and 155,531.96
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Solution
The fourth proportional to 276,390.74, 381,414.76 and 155,531.96 is: 214,631.59
Step by Step Solution
- Step 1: Write the proportion equation
276,390.74 : 381,414.76 = 155,531.96 : x - Step 2: Convert to fraction form
276,390.74/381,414.76 = 155,531.96/x - Step 3: Cross multiply
276,390.74x = 381,414.76 × 155,531.96 - Step 4: Simplify right side
276,390.74x = 59,322,184,330.13 - Step 5: Solve for x
x = 59,322,184,330.13/276,390.74 - Step 6: Final answer
x = 214,631.59
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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.