Finding the Fourth Proportional to 256,305.42, 353,706.93 and 143,128.08
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Solution
The fourth proportional to 256,305.42, 353,706.93 and 143,128.08 is: 197,519.79
Step by Step Solution
- Step 1: Write the proportion equation
256,305.42 : 353,706.93 = 143,128.08 : x - Step 2: Convert to fraction form
256,305.42/353,706.93 = 143,128.08/x - Step 3: Cross multiply
256,305.42x = 353,706.93 × 143,128.08 - Step 4: Simplify right side
256,305.42x = 50,625,393,773.59 - Step 5: Solve for x
x = 50,625,393,773.59/256,305.42 - Step 6: Final answer
x = 197,519.79
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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.