Finding the Fourth Proportional to 402,670.09, 555,685.07 and 221,385.12
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Solution
The fourth proportional to 402,670.09, 555,685.07 and 221,385.12 is: 305,511.66
Step by Step Solution
- Step 1: Write the proportion equation
402,670.09 : 555,685.07 = 221,385.12 : x - Step 2: Convert to fraction form
402,670.09/555,685.07 = 221,385.12/x - Step 3: Cross multiply
402,670.09x = 555,685.07 × 221,385.12 - Step 4: Simplify right side
402,670.09x = 123,020,405,904.16 - Step 5: Solve for x
x = 123,020,405,904.16/402,670.09 - Step 6: Final answer
x = 305,511.66
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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.