Finding the Fourth Proportional to 391,517.31, 587,363.49 and 125,293.80
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Solution
The fourth proportional to 391,517.31, 587,363.49 and 125,293.80 is: 187,968.71
Step by Step Solution
- Step 1: Write the proportion equation
391,517.31 : 587,363.49 = 125,293.80 : x - Step 2: Convert to fraction form
391,517.31/587,363.49 = 125,293.80/x - Step 3: Cross multiply
391,517.31x = 587,363.49 × 125,293.80 - Step 4: Simplify right side
391,517.31x = 73,593,003,643.36 - Step 5: Solve for x
x = 73,593,003,643.36/391,517.31 - Step 6: Final answer
x = 187,968.71
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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.