Finding the Fourth Proportional to 278,668.41, 384,586.12 and 157,831.19
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Solution
The fourth proportional to 278,668.41, 384,586.12 and 157,831.19 is: 217,820.48
Step by Step Solution
- Step 1: Write the proportion equation
278,668.41 : 384,586.12 = 157,831.19 : x - Step 2: Convert to fraction form
278,668.41/384,586.12 = 157,831.19/x - Step 3: Cross multiply
278,668.41x = 384,586.12 × 157,831.19 - Step 4: Simplify right side
278,668.41x = 60,699,686,103.53 - Step 5: Solve for x
x = 60,699,686,103.53/278,668.41 - Step 6: Final answer
x = 217,820.48
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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.