Finding the Fourth Proportional to 258,370.68, 387,530.97 and 78,457.67
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Solution
The fourth proportional to 258,370.68, 387,530.97 and 78,457.67 is: 117,678.89
Step by Step Solution
- Step 1: Write the proportion equation
258,370.68 : 387,530.97 = 78,457.67 : x - Step 2: Convert to fraction form
258,370.68/387,530.97 = 78,457.67/x - Step 3: Cross multiply
258,370.68x = 387,530.97 × 78,457.67 - Step 4: Simplify right side
258,370.68x = 30,404,776,180.41 - Step 5: Solve for x
x = 30,404,776,180.41/258,370.68 - Step 6: Final answer
x = 117,678.89
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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.