Finding the Fourth Proportional to 257,175.09, 354,889.29 and 142,445.97
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Solution
The fourth proportional to 257,175.09, 354,889.29 and 142,445.97 is: 196,568.61
Step by Step Solution
- Step 1: Write the proportion equation
257,175.09 : 354,889.29 = 142,445.97 : x - Step 2: Convert to fraction form
257,175.09/354,889.29 = 142,445.97/x - Step 3: Cross multiply
257,175.09x = 354,889.29 × 142,445.97 - Step 4: Simplify right side
257,175.09x = 50,552,549,156.66 - Step 5: Solve for x
x = 50,552,549,156.66/257,175.09 - Step 6: Final answer
x = 196,568.61
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1.5x scale
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.