Finding the Fourth Proportional to 276,336.18, 381,316.70 and 155,474.79
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Solution
The fourth proportional to 276,336.18, 381,316.70 and 155,474.79 is: 214,539.90
Step by Step Solution
- Step 1: Write the proportion equation
276,336.18 : 381,316.70 = 155,474.79 : x - Step 2: Convert to fraction form
276,336.18/381,316.70 = 155,474.79/x - Step 3: Cross multiply
276,336.18x = 381,316.70 × 155,474.79 - Step 4: Simplify right side
276,336.18x = 59,285,134,420.60 - Step 5: Solve for x
x = 59,285,134,420.60/276,336.18 - Step 6: Final answer
x = 214,539.90
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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.