Finding the Fourth Proportional to 276,678.06, 381,828.51 and 155,857.74
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Solution
The fourth proportional to 276,678.06, 381,828.51 and 155,857.74 is: 215,090.88
Step by Step Solution
- Step 1: Write the proportion equation
276,678.06 : 381,828.51 = 155,857.74 : x - Step 2: Convert to fraction form
276,678.06/381,828.51 = 155,857.74/x - Step 3: Cross multiply
276,678.06x = 381,828.51 × 155,857.74 - Step 4: Simplify right side
276,678.06x = 59,510,928,636.17 - Step 5: Solve for x
x = 59,510,928,636.17/276,678.06 - Step 6: Final answer
x = 215,090.88
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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.