Finding the Fourth Proportional to 420,709.98, 631,249.92 and 220,983.96
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Solution
The fourth proportional to 420,709.98, 631,249.92 and 220,983.96 is: 331,573.09
Step by Step Solution
- Step 1: Write the proportion equation
420,709.98 : 631,249.92 = 220,983.96 : x - Step 2: Convert to fraction form
420,709.98/631,249.92 = 220,983.96/x - Step 3: Cross multiply
420,709.98x = 631,249.92 × 220,983.96 - Step 4: Simplify right side
420,709.98x = 139,496,107,071.28 - Step 5: Solve for x
x = 139,496,107,071.28/420,709.98 - Step 6: Final answer
x = 331,573.09
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.