Finding the Fourth Proportional to 389,274.32, 537,197.82 and 217,182.05
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Solution
The fourth proportional to 389,274.32, 537,197.82 and 217,182.05 is: 299,710.81
Step by Step Solution
- Step 1: Write the proportion equation
389,274.32 : 537,197.82 = 217,182.05 : x - Step 2: Convert to fraction form
389,274.32/537,197.82 = 217,182.05/x - Step 3: Cross multiply
389,274.32x = 537,197.82 × 217,182.05 - Step 4: Simplify right side
389,274.32x = 116,669,721,117.14 - Step 5: Solve for x
x = 116,669,721,117.14/389,274.32 - Step 6: Final answer
x = 299,710.81
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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.