Finding the Fourth Proportional to 229,899.12, 317,257.74 and 129,297.12
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Solution
The fourth proportional to 229,899.12, 317,257.74 and 129,297.12 is: 178,428.31
Step by Step Solution
- Step 1: Write the proportion equation
229,899.12 : 317,257.74 = 129,297.12 : x - Step 2: Convert to fraction form
229,899.12/317,257.74 = 129,297.12/x - Step 3: Cross multiply
229,899.12x = 317,257.74 × 129,297.12 - Step 4: Simplify right side
229,899.12x = 41,020,512,079.71 - Step 5: Solve for x
x = 41,020,512,079.71/229,899.12 - Step 6: Final answer
x = 178,428.31
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.