Finding the Fourth Proportional to 280,920.42, 421,392.93 and 81,260.99
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Solution
The fourth proportional to 280,920.42, 421,392.93 and 81,260.99 is: 121,895.04
Step by Step Solution
- Step 1: Write the proportion equation
280,920.42 : 421,392.93 = 81,260.99 : x - Step 2: Convert to fraction form
280,920.42/421,392.93 = 81,260.99/x - Step 3: Cross multiply
280,920.42x = 421,392.93 × 81,260.99 - Step 4: Simplify right side
280,920.42x = 34,242,806,296.42 - Step 5: Solve for x
x = 34,242,806,296.42/280,920.42 - Step 6: Final answer
x = 121,895.04
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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.