Finding the Fourth Proportional to 353,311.24, 487,408.68 and 209,989.84
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Solution
The fourth proportional to 353,311.24, 487,408.68 and 209,989.84 is: 289,690.39
Step by Step Solution
- Step 1: Write the proportion equation
353,311.24 : 487,408.68 = 209,989.84 : x - Step 2: Convert to fraction form
353,311.24/487,408.68 = 209,989.84/x - Step 3: Cross multiply
353,311.24x = 487,408.68 × 209,989.84 - Step 4: Simplify right side
353,311.24x = 102,350,870,727.81 - Step 5: Solve for x
x = 102,350,870,727.81/353,311.24 - Step 6: Final answer
x = 289,690.39
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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.