Finding the Fourth Proportional to 286,728.64, 395,695.66 and 157,676.94
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Solution
The fourth proportional to 286,728.64, 395,695.66 and 157,676.94 is: 217,599.75
Step by Step Solution
- Step 1: Write the proportion equation
286,728.64 : 395,695.66 = 157,676.94 : x - Step 2: Convert to fraction form
286,728.64/395,695.66 = 157,676.94/x - Step 3: Cross multiply
286,728.64x = 395,695.66 × 157,676.94 - Step 4: Simplify right side
286,728.64x = 62,392,080,840.08 - Step 5: Solve for x
x = 62,392,080,840.08/286,728.64 - Step 6: Final answer
x = 217,599.75
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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.