Finding the Fourth Proportional to 268,931,152.14, 371,121,217.47 and 149,858,763.03
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Solution
The fourth proportional to 268,931,152.14, 371,121,217.47 and 149,858,763.03 is: 206,802,990.81
Step by Step Solution
- Step 1: Write the proportion equation
268,931,152.14 : 371,121,217.47 = 149,858,763.03 : x - Step 2: Convert to fraction form
268,931,152.14/371,121,217.47 = 149,858,763.03/x - Step 3: Cross multiply
268,931,152.14x = 371,121,217.47 × 149,858,763.03 - Step 4: Simplify right side
268,931,152.14x = 55,615,766,584,241,832 - Step 5: Solve for x
x = 55,615,766,584,241,832/268,931,152.14 - Step 6: Final answer
x = 206,802,990.81
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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.