Finding the Fourth Proportional to 286,780.16, 395,761.19 and 157,724.28
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Solution
The fourth proportional to 286,780.16, 395,761.19 and 157,724.28 is: 217,662.02
Step by Step Solution
- Step 1: Write the proportion equation
286,780.16 : 395,761.19 = 157,724.28 : x - Step 2: Convert to fraction form
286,780.16/395,761.19 = 157,724.28/x - Step 3: Cross multiply
286,780.16x = 395,761.19 × 157,724.28 - Step 4: Simplify right side
286,780.16x = 62,421,147,956.07 - Step 5: Solve for x
x = 62,421,147,956.07/286,780.16 - Step 6: Final answer
x = 217,662.02
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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.