Finding the Fourth Proportional to 391,372.49, 587,259.59 and 186,439.23
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Solution
The fourth proportional to 391,372.49, 587,259.59 and 186,439.23 is: 279,754.53
Step by Step Solution
- Step 1: Write the proportion equation
391,372.49 : 587,259.59 = 186,439.23 : x - Step 2: Convert to fraction form
391,372.49/587,259.59 = 186,439.23/x - Step 3: Cross multiply
391,372.49x = 587,259.59 × 186,439.23 - Step 4: Simplify right side
391,372.49x = 109,488,224,837.52 - Step 5: Solve for x
x = 109,488,224,837.52/391,372.49 - Step 6: Final answer
x = 279,754.53
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1.5x scale
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.