Finding the Fourth Proportional to 391,000.68, 539,580.60 and 212,152.68
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Solution
The fourth proportional to 391,000.68, 539,580.60 and 212,152.68 is: 292,770.51
Step by Step Solution
- Step 1: Write the proportion equation
391,000.68 : 539,580.60 = 212,152.68 : x - Step 2: Convert to fraction form
391,000.68/539,580.60 = 212,152.68/x - Step 3: Cross multiply
391,000.68x = 539,580.60 × 212,152.68 - Step 4: Simplify right side
391,000.68x = 114,473,470,366.01 - Step 5: Solve for x
x = 114,473,470,366.01/391,000.68 - Step 6: Final answer
x = 292,770.51
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.