Finding the Fourth Proportional to 402,679.08, 555,685.38 and 221,390.82
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Solution
The fourth proportional to 402,679.08, 555,685.38 and 221,390.82 is: 305,512.87
Step by Step Solution
- Step 1: Write the proportion equation
402,679.08 : 555,685.38 = 221,390.82 : x - Step 2: Convert to fraction form
402,679.08/555,685.38 = 221,390.82/x - Step 3: Cross multiply
402,679.08x = 555,685.38 × 221,390.82 - Step 4: Simplify right side
402,679.08x = 123,023,641,940.21 - Step 5: Solve for x
x = 123,023,641,940.21/402,679.08 - Step 6: Final answer
x = 305,512.87
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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.