Finding the Fourth Proportional to 421,216.74, 581,278.26 and 239,928.60
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Solution
The fourth proportional to 421,216.74, 581,278.26 and 239,928.60 is: 331,100.99
Step by Step Solution
- Step 1: Write the proportion equation
421,216.74 : 581,278.26 = 239,928.60 : x - Step 2: Convert to fraction form
421,216.74/581,278.26 = 239,928.60/x - Step 3: Cross multiply
421,216.74x = 581,278.26 × 239,928.60 - Step 4: Simplify right side
421,216.74x = 139,465,279,132.24 - Step 5: Solve for x
x = 139,465,279,132.24/421,216.74 - Step 6: Final answer
x = 331,100.99
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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.