Finding the Fourth Proportional to 391,415.44, 587,356.44 and 142,116.88
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Solution
The fourth proportional to 391,415.44, 587,356.44 and 142,116.88 is: 213,260.02
Step by Step Solution
- Step 1: Write the proportion equation
391,415.44 : 587,356.44 = 142,116.88 : x - Step 2: Convert to fraction form
391,415.44/587,356.44 = 142,116.88/x - Step 3: Cross multiply
391,415.44x = 587,356.44 × 142,116.88 - Step 4: Simplify right side
391,415.44x = 83,473,264,700.71 - Step 5: Solve for x
x = 83,473,264,700.71/391,415.44 - Step 6: Final answer
x = 213,260.02
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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.