Finding the Fourth Proportional to 387,312.68, 580,837.26 and 147,369.62
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Solution
The fourth proportional to 387,312.68, 580,837.26 and 147,369.62 is: 221,004.30
Step by Step Solution
- Step 1: Write the proportion equation
387,312.68 : 580,837.26 = 147,369.62 : x - Step 2: Convert to fraction form
387,312.68/580,837.26 = 147,369.62/x - Step 3: Cross multiply
387,312.68x = 580,837.26 × 147,369.62 - Step 4: Simplify right side
387,312.68x = 85,597,766,288.04 - Step 5: Solve for x
x = 85,597,766,288.04/387,312.68 - Step 6: Final answer
x = 221,004.30
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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.