Finding the Fourth Proportional to 421,103.84, 581,157.84 and 239,872.54
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Solution
The fourth proportional to 421,103.84, 581,157.84 and 239,872.54 is: 331,043.78
Step by Step Solution
- Step 1: Write the proportion equation
421,103.84 : 581,157.84 = 239,872.54 : x - Step 2: Convert to fraction form
421,103.84/581,157.84 = 239,872.54/x - Step 3: Cross multiply
421,103.84x = 581,157.84 × 239,872.54 - Step 4: Simplify right side
421,103.84x = 139,403,807,221.71 - Step 5: Solve for x
x = 139,403,807,221.71/421,103.84 - Step 6: Final answer
x = 331,043.78
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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.