Finding the Fourth Proportional to 402,838.74, 555,926.34 and 221,559.84
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Solution
The fourth proportional to 402,838.74, 555,926.34 and 221,559.84 is: 305,757.47
Step by Step Solution
- Step 1: Write the proportion equation
402,838.74 : 555,926.34 = 221,559.84 : x - Step 2: Convert to fraction form
402,838.74/555,926.34 = 221,559.84/x - Step 3: Cross multiply
402,838.74x = 555,926.34 × 221,559.84 - Step 4: Simplify right side
402,838.74x = 123,170,954,274.13 - Step 5: Solve for x
x = 123,170,954,274.13/402,838.74 - Step 6: Final answer
x = 305,757.47
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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.