Finding the Fourth Proportional to 218,831.20, 328,246.74 and 69,176.54
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Solution
The fourth proportional to 218,831.20, 328,246.74 and 69,176.54 is: 103,764.79
Step by Step Solution
- Step 1: Write the proportion equation
218,831.20 : 328,246.74 = 69,176.54 : x - Step 2: Convert to fraction form
218,831.20/328,246.74 = 69,176.54/x - Step 3: Cross multiply
218,831.20x = 328,246.74 × 69,176.54 - Step 4: Simplify right side
218,831.20x = 22,706,973,739.48 - Step 5: Solve for x
x = 22,706,973,739.48/218,831.20 - Step 6: Final answer
x = 103,764.79
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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.