Finding the Fourth Proportional to 256,854.36, 385,359.12 and 76,945.62
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Solution
The fourth proportional to 256,854.36, 385,359.12 and 76,945.62 is: 115,441.67
Step by Step Solution
- Step 1: Write the proportion equation
256,854.36 : 385,359.12 = 76,945.62 : x - Step 2: Convert to fraction form
256,854.36/385,359.12 = 76,945.62/x - Step 3: Cross multiply
256,854.36x = 385,359.12 × 76,945.62 - Step 4: Simplify right side
256,854.36x = 29,651,696,411.05 - Step 5: Solve for x
x = 29,651,696,411.05/256,854.36 - Step 6: Final answer
x = 115,441.67
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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.