Finding the Fourth Proportional to 278,069,876.40, 416,626,517.70 and 180,975,605.70
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Solution
The fourth proportional to 278,069,876.40, 416,626,517.70 and 180,975,605.70 is: 271,152,119.63
Step by Step Solution
- Step 1: Write the proportion equation
278,069,876.40 : 416,626,517.70 = 180,975,605.70 : x - Step 2: Convert to fraction form
278,069,876.40/416,626,517.70 = 180,975,605.70/x - Step 3: Cross multiply
278,069,876.40x = 416,626,517.70 × 180,975,605.70 - Step 4: Simplify right side
278,069,876.40x = 75,399,236,391,439,264 - Step 5: Solve for x
x = 75,399,236,391,439,264/278,069,876.40 - Step 6: Final answer
x = 271,152,119.63
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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.