Finding the Fourth Proportional to 286,722.69, 395,687.48 and 157,671.06
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Solution
The fourth proportional to 286,722.69, 395,687.48 and 157,671.06 is: 217,591.65
Step by Step Solution
- Step 1: Write the proportion equation
286,722.69 : 395,687.48 = 157,671.06 : x - Step 2: Convert to fraction form
286,722.69/395,687.48 = 157,671.06/x - Step 3: Cross multiply
286,722.69x = 395,687.48 × 157,671.06 - Step 4: Simplify right side
286,722.69x = 62,388,463,015.05 - Step 5: Solve for x
x = 62,388,463,015.05/286,722.69 - Step 6: Final answer
x = 217,591.65
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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.