Finding the Fourth Proportional to 420,114.87, 579,593.48 and 258,689.97
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Solution
The fourth proportional to 420,114.87, 579,593.48 and 258,689.97 is: 356,890.53
Step by Step Solution
- Step 1: Write the proportion equation
420,114.87 : 579,593.48 = 258,689.97 : x - Step 2: Convert to fraction form
420,114.87/579,593.48 = 258,689.97/x - Step 3: Cross multiply
420,114.87x = 579,593.48 × 258,689.97 - Step 4: Simplify right side
420,114.87x = 149,935,018,659.95 - Step 5: Solve for x
x = 149,935,018,659.95/420,114.87 - Step 6: Final answer
x = 356,890.53
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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.