Finding the Fourth Proportional to 213,715,219.20, 320,572,828.80 and 201,810,940.80
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Solution
The fourth proportional to 213,715,219.20, 320,572,828.80 and 201,810,940.80 is: 302,716,411.20
Step by Step Solution
- Step 1: Write the proportion equation
213,715,219.20 : 320,572,828.80 = 201,810,940.80 : x - Step 2: Convert to fraction form
213,715,219.20/320,572,828.80 = 201,810,940.80/x - Step 3: Cross multiply
213,715,219.20x = 320,572,828.80 × 201,810,940.80 - Step 4: Simplify right side
213,715,219.20x = 64,695,104,175,045,344 - Step 5: Solve for x
x = 64,695,104,175,045,344/213,715,219.20 - Step 6: Final answer
x = 302,716,411.20
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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.