Finding the Fourth Proportional to 354,203.42, 531,164.18 and 129,512.66
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Solution
The fourth proportional to 354,203.42, 531,164.18 and 129,512.66 is: 194,217.45
Step by Step Solution
- Step 1: Write the proportion equation
354,203.42 : 531,164.18 = 129,512.66 : x - Step 2: Convert to fraction form
354,203.42/531,164.18 = 129,512.66/x - Step 3: Cross multiply
354,203.42x = 531,164.18 × 129,512.66 - Step 4: Simplify right side
354,203.42x = 68,792,483,516.48 - Step 5: Solve for x
x = 68,792,483,516.48/354,203.42 - Step 6: Final answer
x = 194,217.45
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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.