Finding the Fourth Proportional to 291,270,381.60, 436,611,639.60 and 145,479,712.80
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Solution
The fourth proportional to 291,270,381.60, 436,611,639.60 and 145,479,712.80 is: 218,072,759.70
Step by Step Solution
- Step 1: Write the proportion equation
291,270,381.60 : 436,611,639.60 = 145,479,712.80 : x - Step 2: Convert to fraction form
291,270,381.60/436,611,639.60 = 145,479,712.80/x - Step 3: Cross multiply
291,270,381.60x = 436,611,639.60 × 145,479,712.80 - Step 4: Simplify right side
291,270,381.60x = 63,518,135,934,145,112 - Step 5: Solve for x
x = 63,518,135,934,145,112/291,270,381.60 - Step 6: Final answer
x = 218,072,759.70
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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.