Finding the Fourth Proportional to 258,538.68, 387,814.50 and 71,551.80
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Solution
The fourth proportional to 258,538.68, 387,814.50 and 71,551.80 is: 107,329.49
Step by Step Solution
- Step 1: Write the proportion equation
258,538.68 : 387,814.50 = 71,551.80 : x - Step 2: Convert to fraction form
258,538.68/387,814.50 = 71,551.80/x - Step 3: Cross multiply
258,538.68x = 387,814.50 × 71,551.80 - Step 4: Simplify right side
258,538.68x = 27,748,825,541.10 - Step 5: Solve for x
x = 27,748,825,541.10/258,538.68 - Step 6: Final answer
x = 107,329.49
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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.