Finding the Fourth Proportional to 229,972.80, 317,359.08 and 129,370.80
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Solution
The fourth proportional to 229,972.80, 317,359.08 and 129,370.80 is: 178,529.80
Step by Step Solution
- Step 1: Write the proportion equation
229,972.80 : 317,359.08 = 129,370.80 : x - Step 2: Convert to fraction form
229,972.80/317,359.08 = 129,370.80/x - Step 3: Cross multiply
229,972.80x = 317,359.08 × 129,370.80 - Step 4: Simplify right side
229,972.80x = 41,056,998,066.86 - Step 5: Solve for x
x = 41,056,998,066.86/229,972.80 - Step 6: Final answer
x = 178,529.80
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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.