Finding the Fourth Proportional to 290,142,425.70, 435,213,638.55 and 252,351,065.70
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Solution
The fourth proportional to 290,142,425.70, 435,213,638.55 and 252,351,065.70 is: 378,526,598.55
Step by Step Solution
- Step 1: Write the proportion equation
290,142,425.70 : 435,213,638.55 = 252,351,065.70 : x - Step 2: Convert to fraction form
290,142,425.70/435,213,638.55 = 252,351,065.70/x - Step 3: Cross multiply
290,142,425.70x = 435,213,638.55 × 252,351,065.70 - Step 4: Simplify right side
290,142,425.70x = 109,826,625,495,267,104 - Step 5: Solve for x
x = 109,826,625,495,267,104/290,142,425.70 - Step 6: Final answer
x = 378,526,598.55
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1.5x scale
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.