Finding the Fourth Proportional to 339,987.70, 509,981.55 and 118,371.70
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Solution
The fourth proportional to 339,987.70, 509,981.55 and 118,371.70 is: 177,557.55
Step by Step Solution
- Step 1: Write the proportion equation
339,987.70 : 509,981.55 = 118,371.70 : x - Step 2: Convert to fraction form
339,987.70/509,981.55 = 118,371.70/x - Step 3: Cross multiply
339,987.70x = 509,981.55 × 118,371.70 - Step 4: Simplify right side
339,987.70x = 60,367,383,042.14 - Step 5: Solve for x
x = 60,367,383,042.14/339,987.70 - Step 6: Final answer
x = 177,557.55
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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.