Finding the Fourth Proportional to 288,116.29, 431,128.58 and 208,314.08
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Solution
The fourth proportional to 288,116.29, 431,128.58 and 208,314.08 is: 311,714.94
Step by Step Solution
- Step 1: Write the proportion equation
288,116.29 : 431,128.58 = 208,314.08 : x - Step 2: Convert to fraction form
288,116.29/431,128.58 = 208,314.08/x - Step 3: Cross multiply
288,116.29x = 431,128.58 × 208,314.08 - Step 4: Simplify right side
288,116.29x = 89,810,151,923.93 - Step 5: Solve for x
x = 89,810,151,923.93/288,116.29 - Step 6: Final answer
x = 311,714.94
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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.