Finding the Fourth Proportional to 389,803.75, 537,929.18 and 210,955.75
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Solution
The fourth proportional to 389,803.75, 537,929.18 and 210,955.75 is: 291,118.94
Step by Step Solution
- Step 1: Write the proportion equation
389,803.75 : 537,929.18 = 210,955.75 : x - Step 2: Convert to fraction form
389,803.75/537,929.18 = 210,955.75/x - Step 3: Cross multiply
389,803.75x = 537,929.18 × 210,955.75 - Step 4: Simplify right side
389,803.75x = 113,479,253,613.79 - Step 5: Solve for x
x = 113,479,253,613.79/389,803.75 - Step 6: Final answer
x = 291,118.94
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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.