Finding the Fourth Proportional to 268,831.20, 403,246.80 and 119,143.20
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Solution
The fourth proportional to 268,831.20, 403,246.80 and 119,143.20 is: 178,714.80
Step by Step Solution
- Step 1: Write the proportion equation
268,831.20 : 403,246.80 = 119,143.20 : x - Step 2: Convert to fraction form
268,831.20/403,246.80 = 119,143.20/x - Step 3: Cross multiply
268,831.20x = 403,246.80 × 119,143.20 - Step 4: Simplify right side
268,831.20x = 48,044,114,141.76 - Step 5: Solve for x
x = 48,044,114,141.76/268,831.20 - Step 6: Final answer
x = 178,714.80
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1.5x scale
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.