Finding the Fourth Proportional to 288,357.19, 431,684.07 and 212,976.70
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Solution
The fourth proportional to 288,357.19, 431,684.07 and 212,976.70 is: 318,835.98
Step by Step Solution
- Step 1: Write the proportion equation
288,357.19 : 431,684.07 = 212,976.70 : x - Step 2: Convert to fraction form
288,357.19/431,684.07 = 212,976.70/x - Step 3: Cross multiply
288,357.19x = 431,684.07 × 212,976.70 - Step 4: Simplify right side
288,357.19x = 91,938,648,671.17 - Step 5: Solve for x
x = 91,938,648,671.17/288,357.19 - Step 6: Final answer
x = 318,835.98
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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.