Finding the Fourth Proportional to 209,114,416.80, 313,671,625.20 and 122,894,128.80
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Solution
The fourth proportional to 209,114,416.80, 313,671,625.20 and 122,894,128.80 is: 184,341,193.20
Step by Step Solution
- Step 1: Write the proportion equation
209,114,416.80 : 313,671,625.20 = 122,894,128.80 : x - Step 2: Convert to fraction form
209,114,416.80/313,671,625.20 = 122,894,128.80/x - Step 3: Cross multiply
209,114,416.80x = 313,671,625.20 × 122,894,128.80 - Step 4: Simplify right side
209,114,416.80x = 38,548,401,108,234,120 - Step 5: Solve for x
x = 38,548,401,108,234,120/209,114,416.80 - Step 6: Final answer
x = 184,341,193.20
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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.