Finding the Fourth Proportional to 286,831.40, 430,246.62 and 136,616.09
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Solution
The fourth proportional to 286,831.40, 430,246.62 and 136,616.09 is: 204,923.90
Step by Step Solution
- Step 1: Write the proportion equation
286,831.40 : 430,246.62 = 136,616.09 : x - Step 2: Convert to fraction form
286,831.40/430,246.62 = 136,616.09/x - Step 3: Cross multiply
286,831.40x = 430,246.62 × 136,616.09 - Step 4: Simplify right side
286,831.40x = 58,778,608,808.88 - Step 5: Solve for x
x = 58,778,608,808.88/286,831.40 - Step 6: Final answer
x = 204,923.90
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.