Finding the Fourth Proportional to 276,286.06, 381,243.86 and 155,424.84
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Solution
The fourth proportional to 276,286.06, 381,243.86 and 155,424.84 is: 214,468.89
Step by Step Solution
- Step 1: Write the proportion equation
276,286.06 : 381,243.86 = 155,424.84 : x - Step 2: Convert to fraction form
276,286.06/381,243.86 = 155,424.84/x - Step 3: Cross multiply
276,286.06x = 381,243.86 × 155,424.84 - Step 4: Simplify right side
276,286.06x = 59,254,765,941.48 - Step 5: Solve for x
x = 59,254,765,941.48/276,286.06 - Step 6: Final answer
x = 214,468.89
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1.5x scale
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.