Finding the Fourth Proportional to 421,286.01, 581,378.58 and 239,995.26
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Solution
The fourth proportional to 421,286.01, 581,378.58 and 239,995.26 is: 331,195.67
Step by Step Solution
- Step 1: Write the proportion equation
421,286.01 : 581,378.58 = 239,995.26 : x - Step 2: Convert to fraction form
421,286.01/581,378.58 = 239,995.26/x - Step 3: Cross multiply
421,286.01x = 581,378.58 × 239,995.26 - Step 4: Simplify right side
421,286.01x = 139,528,103,465.53 - Step 5: Solve for x
x = 139,528,103,465.53/421,286.01 - Step 6: Final answer
x = 331,195.67
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1.5x scale
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.