Finding the Fourth Proportional to 387,136.19, 580,785.12 and 195,118.54
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Solution
The fourth proportional to 387,136.19, 580,785.12 and 195,118.54 is: 292,718.55
Step by Step Solution
- Step 1: Write the proportion equation
387,136.19 : 580,785.12 = 195,118.54 : x - Step 2: Convert to fraction form
387,136.19/580,785.12 = 195,118.54/x - Step 3: Cross multiply
387,136.19x = 580,785.12 × 195,118.54 - Step 4: Simplify right side
387,136.19x = 113,321,943,216.16 - Step 5: Solve for x
x = 113,321,943,216.16/387,136.19 - Step 6: Final answer
x = 292,718.55
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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.