Finding the Fourth Proportional to 279,985,205.70, 419,977,808.55 and 193,891,763.70
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Solution
The fourth proportional to 279,985,205.70, 419,977,808.55 and 193,891,763.70 is: 290,837,645.55
Step by Step Solution
- Step 1: Write the proportion equation
279,985,205.70 : 419,977,808.55 = 193,891,763.70 : x - Step 2: Convert to fraction form
279,985,205.70/419,977,808.55 = 193,891,763.70/x - Step 3: Cross multiply
279,985,205.70x = 419,977,808.55 × 193,891,763.70 - Step 4: Simplify right side
279,985,205.70x = 81,430,238,014,620,432 - Step 5: Solve for x
x = 81,430,238,014,620,432/279,985,205.70 - Step 6: Final answer
x = 290,837,645.55
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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.