Finding the Fourth Proportional to 381,706.80, 572,070.60 and 213,226.80
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Solution
The fourth proportional to 381,706.80, 572,070.60 and 213,226.80 is: 319,566.70
Step by Step Solution
- Step 1: Write the proportion equation
381,706.80 : 572,070.60 = 213,226.80 : x - Step 2: Convert to fraction form
381,706.80/572,070.60 = 213,226.80/x - Step 3: Cross multiply
381,706.80x = 572,070.60 × 213,226.80 - Step 4: Simplify right side
381,706.80x = 121,980,783,412.08 - Step 5: Solve for x
x = 121,980,783,412.08/381,706.80 - Step 6: Final answer
x = 319,566.70
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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.