Finding the Fourth Proportional to 387,097.76, 580,646.41 and 120,881.08
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Solution
The fourth proportional to 387,097.76, 580,646.41 and 120,881.08 is: 181,321.55
Step by Step Solution
- Step 1: Write the proportion equation
387,097.76 : 580,646.41 = 120,881.08 : x - Step 2: Convert to fraction form
387,097.76/580,646.41 = 120,881.08/x - Step 3: Cross multiply
387,097.76x = 580,646.41 × 120,881.08 - Step 4: Simplify right side
387,097.76x = 70,189,166,439.44 - Step 5: Solve for x
x = 70,189,166,439.44/387,097.76 - Step 6: Final answer
x = 181,321.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.