Finding the Fourth Proportional to 291,270,389.60, 436,611,651.60 and 145,479,720.80
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Solution
The fourth proportional to 291,270,389.60, 436,611,651.60 and 145,479,720.80 is: 218,072,771.70
Step by Step Solution
- Step 1: Write the proportion equation
291,270,389.60 : 436,611,651.60 = 145,479,720.80 : x - Step 2: Convert to fraction form
291,270,389.60/436,611,651.60 = 145,479,720.80/x - Step 3: Cross multiply
291,270,389.60x = 436,611,651.60 × 145,479,720.80 - Step 4: Simplify right side
291,270,389.60x = 63,518,141,172,794,880 - Step 5: Solve for x
x = 63,518,141,172,794,880/291,270,389.60 - Step 6: Final answer
x = 218,072,771.70
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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.