Finding the Fourth Proportional to 276,690.16, 381,828.36 and 155,831.68
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Solution
The fourth proportional to 276,690.16, 381,828.36 and 155,831.68 is: 215,045.43
Step by Step Solution
- Step 1: Write the proportion equation
276,690.16 : 381,828.36 = 155,831.68 : x - Step 2: Convert to fraction form
276,690.16/381,828.36 = 155,831.68/x - Step 3: Cross multiply
276,690.16x = 381,828.36 × 155,831.68 - Step 4: Simplify right side
276,690.16x = 59,500,954,810.44 - Step 5: Solve for x
x = 59,500,954,810.44/276,690.16 - Step 6: Final answer
x = 215,045.43
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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.