Finding the Fourth Proportional to 278,316,199.70, 417,474,299.55 and 278,316,199.70
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Solution
The fourth proportional to 278,316,199.70, 417,474,299.55 and 278,316,199.70 is: 417,474,299.55
Step by Step Solution
- Step 1: Write the proportion equation
278,316,199.70 : 417,474,299.55 = 278,316,199.70 : x - Step 2: Convert to fraction form
278,316,199.70/417,474,299.55 = 278,316,199.70/x - Step 3: Cross multiply
278,316,199.70x = 417,474,299.55 × 278,316,199.70 - Step 4: Simplify right side
278,316,199.70x = 116,189,860,523,175,424 - Step 5: Solve for x
x = 116,189,860,523,175,424/278,316,199.70 - Step 6: Final answer
x = 417,474,299.55
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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.