Finding the Fourth Proportional to 268,928,975.81, 371,112,188.61 and 149,845,415.20
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Solution
The fourth proportional to 268,928,975.81, 371,112,188.61 and 149,845,415.20 is: 206,781,213.59
Step by Step Solution
- Step 1: Write the proportion equation
268,928,975.81 : 371,112,188.61 = 149,845,415.20 : x - Step 2: Convert to fraction form
268,928,975.81/371,112,188.61 = 149,845,415.20/x - Step 3: Cross multiply
268,928,975.81x = 371,112,188.61 × 149,845,415.20 - Step 4: Simplify right side
268,928,975.81x = 55,609,459,986,838,160 - Step 5: Solve for x
x = 55,609,459,986,838,160/268,928,975.81 - Step 6: Final answer
x = 206,781,213.59
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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.