Finding the Fourth Proportional to 393,397,388.23, 542,885,584.94 and 214,781,270.98
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Solution
The fourth proportional to 393,397,388.23, 542,885,584.94 and 214,781,270.98 is: 296,396,619.34
Step by Step Solution
- Step 1: Write the proportion equation
393,397,388.23 : 542,885,584.94 = 214,781,270.98 : x - Step 2: Convert to fraction form
393,397,388.23/542,885,584.94 = 214,781,270.98/x - Step 3: Cross multiply
393,397,388.23x = 542,885,584.94 × 214,781,270.98 - Step 4: Simplify right side
393,397,388.23x = 116,601,655,929,060,016 - Step 5: Solve for x
x = 116,601,655,929,060,016/393,397,388.23 - Step 6: Final answer
x = 296,396,619.34
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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.