Finding the Fourth Proportional to 272,879,101.80, 409,318,652.70 and 78,796,848.60
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Solution
The fourth proportional to 272,879,101.80, 409,318,652.70 and 78,796,848.60 is: 118,195,272.90
Step by Step Solution
- Step 1: Write the proportion equation
272,879,101.80 : 409,318,652.70 = 78,796,848.60 : x - Step 2: Convert to fraction form
272,879,101.80/409,318,652.70 = 78,796,848.60/x - Step 3: Cross multiply
272,879,101.80x = 409,318,652.70 × 78,796,848.60 - Step 4: Simplify right side
272,879,101.80x = 32,253,019,905,957,876 - Step 5: Solve for x
x = 32,253,019,905,957,876/272,879,101.80 - Step 6: Final answer
x = 118,195,272.90
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.