Finding the Fourth Proportional to 421,212.48, 581,307.84 and 239,981.28
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Solution
The fourth proportional to 421,212.48, 581,307.84 and 239,981.28 is: 331,193.89
Step by Step Solution
- Step 1: Write the proportion equation
421,212.48 : 581,307.84 = 239,981.28 : x - Step 2: Convert to fraction form
421,212.48/581,307.84 = 239,981.28/x - Step 3: Cross multiply
421,212.48x = 581,307.84 × 239,981.28 - Step 4: Simplify right side
421,212.48x = 139,502,999,517.24 - Step 5: Solve for x
x = 139,502,999,517.24/421,212.48 - Step 6: Final answer
x = 331,193.89
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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.