Finding the Fourth Proportional to 208,607,353.20, 312,911,029.80 and 154,187,794.80
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Solution
The fourth proportional to 208,607,353.20, 312,911,029.80 and 154,187,794.80 is: 231,281,692.20
Step by Step Solution
- Step 1: Write the proportion equation
208,607,353.20 : 312,911,029.80 = 154,187,794.80 : x - Step 2: Convert to fraction form
208,607,353.20/312,911,029.80 = 154,187,794.80/x - Step 3: Cross multiply
208,607,353.20x = 312,911,029.80 × 154,187,794.80 - Step 4: Simplify right side
208,607,353.20x = 48,247,061,653,459,088 - Step 5: Solve for x
x = 48,247,061,653,459,088/208,607,353.20 - Step 6: Final answer
x = 231,281,692.20
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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.