Finding the Fourth Proportional to 402,723.14, 555,743.70 and 221,433.80
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Solution
The fourth proportional to 402,723.14, 555,743.70 and 221,433.80 is: 305,570.82
Step by Step Solution
- Step 1: Write the proportion equation
402,723.14 : 555,743.70 = 221,433.80 : x - Step 2: Convert to fraction form
402,723.14/555,743.70 = 221,433.80/x - Step 3: Cross multiply
402,723.14x = 555,743.70 × 221,433.80 - Step 4: Simplify right side
402,723.14x = 123,060,439,317.06 - Step 5: Solve for x
x = 123,060,439,317.06/402,723.14 - Step 6: Final answer
x = 305,570.82
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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.