Finding the Fourth Proportional to 268,931,172.26, 371,121,245.19 and 149,858,783.12
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Solution
The fourth proportional to 268,931,172.26, 371,121,245.19 and 149,858,783.12 is: 206,803,018.51
Step by Step Solution
- Step 1: Write the proportion equation
268,931,172.26 : 371,121,245.19 = 149,858,783.12 : x - Step 2: Convert to fraction form
268,931,172.26/371,121,245.19 = 149,858,783.12/x - Step 3: Cross multiply
268,931,172.26x = 371,121,245.19 × 149,858,783.12 - Step 4: Simplify right side
268,931,172.26x = 55,615,778,194,152,552 - Step 5: Solve for x
x = 55,615,778,194,152,552/268,931,172.26 - Step 6: Final answer
x = 206,803,018.51
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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.