Finding the Fourth Proportional to 258,558.68, 387,838.02 and 81,079.99
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Solution
The fourth proportional to 258,558.68, 387,838.02 and 81,079.99 is: 121,619.98
Step by Step Solution
- Step 1: Write the proportion equation
258,558.68 : 387,838.02 = 81,079.99 : x - Step 2: Convert to fraction form
258,558.68/387,838.02 = 81,079.99/x - Step 3: Cross multiply
258,558.68x = 387,838.02 × 81,079.99 - Step 4: Simplify right side
258,558.68x = 31,445,902,117.67 - Step 5: Solve for x
x = 31,445,902,117.67/258,558.68 - Step 6: Final answer
x = 121,619.98
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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.