Finding the Fourth Proportional to 389,742.75, 537,846.62 and 210,894.75
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Solution
The fourth proportional to 389,742.75, 537,846.62 and 210,894.75 is: 291,035.63
Step by Step Solution
- Step 1: Write the proportion equation
389,742.75 : 537,846.62 = 210,894.75 : x - Step 2: Convert to fraction form
389,742.75/537,846.62 = 210,894.75/x - Step 3: Cross multiply
389,742.75x = 537,846.62 × 210,894.75 - Step 4: Simplify right side
389,742.75x = 113,429,027,408.77 - Step 5: Solve for x
x = 113,429,027,408.77/389,742.75 - Step 6: Final answer
x = 291,035.63
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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.