Finding the Fourth Proportional to 287,514.60, 431,116.20 and 129,558.12
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Solution
The fourth proportional to 287,514.60, 431,116.20 and 129,558.12 is: 194,267.02
Step by Step Solution
- Step 1: Write the proportion equation
287,514.60 : 431,116.20 = 129,558.12 : x - Step 2: Convert to fraction form
287,514.60/431,116.20 = 129,558.12/x - Step 3: Cross multiply
287,514.60x = 431,116.20 × 129,558.12 - Step 4: Simplify right side
287,514.60x = 55,854,604,373.54 - Step 5: Solve for x
x = 55,854,604,373.54/287,514.60 - Step 6: Final answer
x = 194,267.02
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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.