Finding the Fourth Proportional to 359,405,728.68, 539,168,191.74 and 126,175,909.80
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Solution
The fourth proportional to 359,405,728.68, 539,168,191.74 and 126,175,909.80 is: 189,284,787.91
Step by Step Solution
- Step 1: Write the proportion equation
359,405,728.68 : 539,168,191.74 = 126,175,909.80 : x - Step 2: Convert to fraction form
359,405,728.68/539,168,191.74 = 126,175,909.80/x - Step 3: Cross multiply
359,405,728.68x = 539,168,191.74 × 126,175,909.80 - Step 4: Simplify right side
359,405,728.68x = 68,030,037,128,015,344 - Step 5: Solve for x
x = 68,030,037,128,015,344/359,405,728.68 - Step 6: Final answer
x = 189,284,787.91
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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.