Finding the Fourth Proportional to 247,430.70, 371,124.45 and 81,218.70
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Solution
The fourth proportional to 247,430.70, 371,124.45 and 81,218.70 is: 121,820.96
Step by Step Solution
- Step 1: Write the proportion equation
247,430.70 : 371,124.45 = 81,218.70 : x - Step 2: Convert to fraction form
247,430.70/371,124.45 = 81,218.70/x - Step 3: Cross multiply
247,430.70x = 371,124.45 × 81,218.70 - Step 4: Simplify right side
247,430.70x = 30,142,245,367.22 - Step 5: Solve for x
x = 30,142,245,367.22/247,430.70 - Step 6: Final answer
x = 121,820.96
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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.