Finding the Fourth Proportional to 272,981,321.20, 409,471,981.80 and 88,748,441.20
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Solution
The fourth proportional to 272,981,321.20, 409,471,981.80 and 88,748,441.20 is: 133,122,661.80
Step by Step Solution
- Step 1: Write the proportion equation
272,981,321.20 : 409,471,981.80 = 88,748,441.20 : x - Step 2: Convert to fraction form
272,981,321.20/409,471,981.80 = 88,748,441.20/x - Step 3: Cross multiply
272,981,321.20x = 409,471,981.80 × 88,748,441.20 - Step 4: Simplify right side
272,981,321.20x = 36,340,000,099,824,776 - Step 5: Solve for x
x = 36,340,000,099,824,776/272,981,321.20 - Step 6: Final answer
x = 133,122,661.80
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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.