Finding the Fourth Proportional to 421,367.34, 581,487.98 and 230,393.06
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Solution
The fourth proportional to 421,367.34, 581,487.98 and 230,393.06 is: 317,942.99
Step by Step Solution
- Step 1: Write the proportion equation
421,367.34 : 581,487.98 = 230,393.06 : x - Step 2: Convert to fraction form
421,367.34/581,487.98 = 230,393.06/x - Step 3: Cross multiply
421,367.34x = 581,487.98 × 230,393.06 - Step 4: Simplify right side
421,367.34x = 133,970,791,006.01 - Step 5: Solve for x
x = 133,970,791,006.01/421,367.34 - Step 6: Final answer
x = 317,942.99
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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.