Finding the Fourth Proportional to 421,207.48, 581,266.20 and 239,936.20
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Solution
The fourth proportional to 421,207.48, 581,266.20 and 239,936.20 is: 331,111.89
Step by Step Solution
- Step 1: Write the proportion equation
421,207.48 : 581,266.20 = 239,936.20 : x - Step 2: Convert to fraction form
421,207.48/581,266.20 = 239,936.20/x - Step 3: Cross multiply
421,207.48x = 581,266.20 × 239,936.20 - Step 4: Simplify right side
421,207.48x = 139,466,803,216.44 - Step 5: Solve for x
x = 139,466,803,216.44/421,207.48 - Step 6: Final answer
x = 331,111.89
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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.