Finding the Fourth Proportional to 278,811.20, 418,224.99 and 68,449.13
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Solution
The fourth proportional to 278,811.20, 418,224.99 and 68,449.13 is: 102,675.70
Step by Step Solution
- Step 1: Write the proportion equation
278,811.20 : 418,224.99 = 68,449.13 : x - Step 2: Convert to fraction form
278,811.20/418,224.99 = 68,449.13/x - Step 3: Cross multiply
278,811.20x = 418,224.99 × 68,449.13 - Step 4: Simplify right side
278,811.20x = 28,627,134,618.63 - Step 5: Solve for x
x = 28,627,134,618.63/278,811.20 - Step 6: Final answer
x = 102,675.70
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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.