Finding the Fourth Proportional to 221,184,136.80, 331,776,205.20 and 212,226,184.80
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Solution
The fourth proportional to 221,184,136.80, 331,776,205.20 and 212,226,184.80 is: 318,339,277.20
Step by Step Solution
- Step 1: Write the proportion equation
221,184,136.80 : 331,776,205.20 = 212,226,184.80 : x - Step 2: Convert to fraction form
221,184,136.80/331,776,205.20 = 212,226,184.80/x - Step 3: Cross multiply
221,184,136.80x = 331,776,205.20 × 212,226,184.80 - Step 4: Simplify right side
221,184,136.80x = 70,411,598,237,017,920 - Step 5: Solve for x
x = 70,411,598,237,017,920/221,184,136.80 - Step 6: Final answer
x = 318,339,277.20
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1.5x scale
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.