Finding the Fourth Proportional to 391,056.80, 585,202.80 and 266,640.80
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Solution
The fourth proportional to 391,056.80, 585,202.80 and 266,640.80 is: 399,018.62
Step by Step Solution
- Step 1: Write the proportion equation
391,056.80 : 585,202.80 = 266,640.80 : x - Step 2: Convert to fraction form
391,056.80/585,202.80 = 266,640.80/x - Step 3: Cross multiply
391,056.80x = 585,202.80 × 266,640.80 - Step 4: Simplify right side
391,056.80x = 156,038,942,754.24 - Step 5: Solve for x
x = 156,038,942,754.24/391,056.80 - Step 6: Final answer
x = 399,018.62
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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.