Finding the Fourth Proportional to 229,817.12, 317,144.58 and 129,215.12
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Solution
The fourth proportional to 229,817.12, 317,144.58 and 129,215.12 is: 178,315.15
Step by Step Solution
- Step 1: Write the proportion equation
229,817.12 : 317,144.58 = 129,215.12 : x - Step 2: Convert to fraction form
229,817.12/317,144.58 = 129,215.12/x - Step 3: Cross multiply
229,817.12x = 317,144.58 × 129,215.12 - Step 4: Simplify right side
229,817.12x = 40,979,874,962.05 - Step 5: Solve for x
x = 40,979,874,962.05/229,817.12 - Step 6: Final answer
x = 178,315.15
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1.5x scale
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.