Finding the Fourth Proportional to 419,695.61, 579,178.13 and 228,708.99
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Solution
The fourth proportional to 419,695.61, 579,178.13 and 228,708.99 is: 315,617.42
Step by Step Solution
- Step 1: Write the proportion equation
419,695.61 : 579,178.13 = 228,708.99 : x - Step 2: Convert to fraction form
419,695.61/579,178.13 = 228,708.99/x - Step 3: Cross multiply
419,695.61x = 579,178.13 × 228,708.99 - Step 4: Simplify right side
419,695.61x = 132,463,243,998.84 - Step 5: Solve for x
x = 132,463,243,998.84/419,695.61 - Step 6: Final answer
x = 315,617.42
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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.