Finding the Fourth Proportional to 354,955.14, 489,780.26 and 209,740.70
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Solution
The fourth proportional to 354,955.14, 489,780.26 and 209,740.70 is: 289,407.99
Step by Step Solution
- Step 1: Write the proportion equation
354,955.14 : 489,780.26 = 209,740.70 : x - Step 2: Convert to fraction form
354,955.14/489,780.26 = 209,740.70/x - Step 3: Cross multiply
354,955.14x = 489,780.26 × 209,740.70 - Step 4: Simplify right side
354,955.14x = 102,726,854,578.58 - Step 5: Solve for x
x = 102,726,854,578.58/354,955.14 - Step 6: Final answer
x = 289,407.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.