Finding the Fourth Proportional to 318,877,233.62, 478,315,856.57 and 76,540,137.62
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Solution
The fourth proportional to 318,877,233.62, 478,315,856.57 and 76,540,137.62 is: 114,810,207.90
Step by Step Solution
- Step 1: Write the proportion equation
318,877,233.62 : 478,315,856.57 = 76,540,137.62 : x - Step 2: Convert to fraction form
318,877,233.62/478,315,856.57 = 76,540,137.62/x - Step 3: Cross multiply
318,877,233.62x = 478,315,856.57 × 76,540,137.62 - Step 4: Simplify right side
318,877,233.62x = 36,610,361,484,921,696 - Step 5: Solve for x
x = 36,610,361,484,921,696/318,877,233.62 - Step 6: Final answer
x = 114,810,207.90
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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.