Finding the Fourth Proportional to 203,521,205.40, 305,281,808.10 and 121,891,867.80
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Solution
The fourth proportional to 203,521,205.40, 305,281,808.10 and 121,891,867.80 is: 182,837,801.70
Step by Step Solution
- Step 1: Write the proportion equation
203,521,205.40 : 305,281,808.10 = 121,891,867.80 : x - Step 2: Convert to fraction form
203,521,205.40/305,281,808.10 = 121,891,867.80/x - Step 3: Cross multiply
203,521,205.40x = 305,281,808.10 × 121,891,867.80 - Step 4: Simplify right side
203,521,205.40x = 37,211,369,794,670,168 - Step 5: Solve for x
x = 37,211,369,794,670,168/203,521,205.40 - Step 6: Final answer
x = 182,837,801.70
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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.