Finding the Fourth Proportional to 391,115.08, 539,739.03 and 212,267.08
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Solution
The fourth proportional to 391,115.08, 539,739.03 and 212,267.08 is: 292,928.69
Step by Step Solution
- Step 1: Write the proportion equation
391,115.08 : 539,739.03 = 212,267.08 : x - Step 2: Convert to fraction form
391,115.08/539,739.03 = 212,267.08/x - Step 3: Cross multiply
391,115.08x = 539,739.03 × 212,267.08 - Step 4: Simplify right side
391,115.08x = 114,568,827,860.13 - Step 5: Solve for x
x = 114,568,827,860.13/391,115.08 - Step 6: Final answer
x = 292,928.69
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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.