Finding the Fourth Proportional to 389,003.71, 536,834.61 and 216,919.99
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Solution
The fourth proportional to 389,003.71, 536,834.61 and 216,919.99 is: 299,354.88
Step by Step Solution
- Step 1: Write the proportion equation
389,003.71 : 536,834.61 = 216,919.99 : x - Step 2: Convert to fraction form
389,003.71/536,834.61 = 216,919.99/x - Step 3: Cross multiply
389,003.71x = 536,834.61 × 216,919.99 - Step 4: Simplify right side
389,003.71x = 116,450,158,232.85 - Step 5: Solve for x
x = 116,450,158,232.85/389,003.71 - Step 6: Final answer
x = 299,354.88
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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.