Finding the Fourth Proportional to 286,697.88, 395,634.68 and 157,636.53
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Solution
The fourth proportional to 286,697.88, 395,634.68 and 157,636.53 is: 217,533.80
Step by Step Solution
- Step 1: Write the proportion equation
286,697.88 : 395,634.68 = 157,636.53 : x - Step 2: Convert to fraction form
286,697.88/395,634.68 = 157,636.53/x - Step 3: Cross multiply
286,697.88x = 395,634.68 × 157,636.53 - Step 4: Simplify right side
286,697.88x = 62,366,477,905.81 - Step 5: Solve for x
x = 62,366,477,905.81/286,697.88 - Step 6: Final answer
x = 217,533.80
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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.