Finding the Fourth Proportional to 421,203.48, 581,260.68 and 239,932.20
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Solution
The fourth proportional to 421,203.48, 581,260.68 and 239,932.20 is: 331,106.37
Step by Step Solution
- Step 1: Write the proportion equation
421,203.48 : 581,260.68 = 239,932.20 : x - Step 2: Convert to fraction form
421,203.48/581,260.68 = 239,932.20/x - Step 3: Cross multiply
421,203.48x = 581,260.68 × 239,932.20 - Step 4: Simplify right side
421,203.48x = 139,463,153,725.90 - Step 5: Solve for x
x = 139,463,153,725.90/421,203.48 - Step 6: Final answer
x = 331,106.37
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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.