Finding the Fourth Proportional to 399,657.24, 599,781.60 and 189,295.80
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Solution
The fourth proportional to 399,657.24, 599,781.60 and 189,295.80 is: 284,083.78
Step by Step Solution
- Step 1: Write the proportion equation
399,657.24 : 599,781.60 = 189,295.80 : x - Step 2: Convert to fraction form
399,657.24/599,781.60 = 189,295.80/x - Step 3: Cross multiply
399,657.24x = 599,781.60 × 189,295.80 - Step 4: Simplify right side
399,657.24x = 113,536,137,797.28 - Step 5: Solve for x
x = 113,536,137,797.28/399,657.24 - Step 6: Final answer
x = 284,083.78
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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.