Finding the Fourth Proportional to 387,219.08, 580,909.26 and 120,968.84
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Solution
The fourth proportional to 387,219.08, 580,909.26 and 120,968.84 is: 181,478.45
Step by Step Solution
- Step 1: Write the proportion equation
387,219.08 : 580,909.26 = 120,968.84 : x - Step 2: Convert to fraction form
387,219.08/580,909.26 = 120,968.84/x - Step 3: Cross multiply
387,219.08x = 580,909.26 × 120,968.84 - Step 4: Simplify right side
387,219.08x = 70,271,919,327.46 - Step 5: Solve for x
x = 70,271,919,327.46/387,219.08 - Step 6: Final answer
x = 181,478.45
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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.