Finding the Fourth Proportional to 331,946.20, 498,113.70 and 121,605.40
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Solution
The fourth proportional to 331,946.20, 498,113.70 and 121,605.40 is: 182,479.32
Step by Step Solution
- Step 1: Write the proportion equation
331,946.20 : 498,113.70 = 121,605.40 : x - Step 2: Convert to fraction form
331,946.20/498,113.70 = 121,605.40/x - Step 3: Cross multiply
331,946.20x = 498,113.70 × 121,605.40 - Step 4: Simplify right side
331,946.20x = 60,573,315,733.98 - Step 5: Solve for x
x = 60,573,315,733.98/331,946.20 - Step 6: Final answer
x = 182,479.32
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1.5x scale
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.