Finding the Fourth Proportional to 261,949.70, 392,924.55 and 72,409.70
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Solution
The fourth proportional to 261,949.70, 392,924.55 and 72,409.70 is: 108,614.55
Step by Step Solution
- Step 1: Write the proportion equation
261,949.70 : 392,924.55 = 72,409.70 : x - Step 2: Convert to fraction form
261,949.70/392,924.55 = 72,409.70/x - Step 3: Cross multiply
261,949.70x = 392,924.55 × 72,409.70 - Step 4: Simplify right side
261,949.70x = 28,451,548,788.14 - Step 5: Solve for x
x = 28,451,548,788.14/261,949.70 - Step 6: Final answer
x = 108,614.55
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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.