Finding the Fourth Proportional to 203,451,715.64, 280,754,824.74 and 115,351,641.20
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Solution
The fourth proportional to 203,451,715.64, 280,754,824.74 and 115,351,641.20 is: 159,180,421.29
Step by Step Solution
- Step 1: Write the proportion equation
203,451,715.64 : 280,754,824.74 = 115,351,641.20 : x - Step 2: Convert to fraction form
203,451,715.64/280,754,824.74 = 115,351,641.20/x - Step 3: Cross multiply
203,451,715.64x = 280,754,824.74 × 115,351,641.20 - Step 4: Simplify right side
203,451,715.64x = 32,385,529,808,577,364 - Step 5: Solve for x
x = 32,385,529,808,577,364/203,451,715.64 - Step 6: Final answer
x = 159,180,421.29
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.