Finding the Fourth Proportional to 215,809,692.80, 323,714,539.20 and 193,134,876.80
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Solution
The fourth proportional to 215,809,692.80, 323,714,539.20 and 193,134,876.80 is: 289,702,315.20
Step by Step Solution
- Step 1: Write the proportion equation
215,809,692.80 : 323,714,539.20 = 193,134,876.80 : x - Step 2: Convert to fraction form
215,809,692.80/323,714,539.20 = 193,134,876.80/x - Step 3: Cross multiply
215,809,692.80x = 323,714,539.20 × 193,134,876.80 - Step 4: Simplify right side
215,809,692.80x = 62,520,567,646,760,776 - Step 5: Solve for x
x = 62,520,567,646,760,776/215,809,692.80 - Step 6: Final answer
x = 289,702,315.20
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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.