Finding the Fourth Proportional to 391,068.62, 539,674.70 and 212,220.62
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Solution
The fourth proportional to 391,068.62, 539,674.70 and 212,220.62 is: 292,864.46
Step by Step Solution
- Step 1: Write the proportion equation
391,068.62 : 539,674.70 = 212,220.62 : x - Step 2: Convert to fraction form
391,068.62/539,674.70 = 212,220.62/x - Step 3: Cross multiply
391,068.62x = 539,674.70 × 212,220.62 - Step 4: Simplify right side
391,068.62x = 114,530,099,432.31 - Step 5: Solve for x
x = 114,530,099,432.31/391,068.62 - Step 6: Final answer
x = 292,864.46
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1.5x scale
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.