Finding the Fourth Proportional to 389,649.36, 537,710.85 and 217,569.99
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Solution
The fourth proportional to 389,649.36, 537,710.85 and 217,569.99 is: 300,243.65
Step by Step Solution
- Step 1: Write the proportion equation
389,649.36 : 537,710.85 = 217,569.99 : x - Step 2: Convert to fraction form
389,649.36/537,710.85 = 217,569.99/x - Step 3: Cross multiply
389,649.36x = 537,710.85 × 217,569.99 - Step 4: Simplify right side
389,649.36x = 116,989,744,257.39 - Step 5: Solve for x
x = 116,989,744,257.39/389,649.36 - Step 6: Final answer
x = 300,243.65
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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.