Finding the Fourth Proportional to 385,638.10, 578,214.15 and 161,154.70
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Solution
The fourth proportional to 385,638.10, 578,214.15 and 161,154.70 is: 241,630.50
Step by Step Solution
- Step 1: Write the proportion equation
385,638.10 : 578,214.15 = 161,154.70 : x - Step 2: Convert to fraction form
385,638.10/578,214.15 = 161,154.70/x - Step 3: Cross multiply
385,638.10x = 578,214.15 × 161,154.70 - Step 4: Simplify right side
385,638.10x = 93,181,927,879.01 - Step 5: Solve for x
x = 93,181,927,879.01/385,638.10 - Step 6: Final answer
x = 241,630.50
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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.