Finding the Fourth Proportional to 402,597.70, 555,591.74 and 221,317.28
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Solution
The fourth proportional to 402,597.70, 555,591.74 and 221,317.28 is: 305,421.65
Step by Step Solution
- Step 1: Write the proportion equation
402,597.70 : 555,591.74 = 221,317.28 : x - Step 2: Convert to fraction form
402,597.70/555,591.74 = 221,317.28/x - Step 3: Cross multiply
402,597.70x = 555,591.74 × 221,317.28 - Step 4: Simplify right side
402,597.70x = 122,962,052,687.27 - Step 5: Solve for x
x = 122,962,052,687.27/402,597.70 - Step 6: Final answer
x = 305,421.65
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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.