Finding the Fourth Proportional to 385,420.46, 577,987.05 and 132,630.26
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Solution
The fourth proportional to 385,420.46, 577,987.05 and 132,630.26 is: 198,895.96
Step by Step Solution
- Step 1: Write the proportion equation
385,420.46 : 577,987.05 = 132,630.26 : x - Step 2: Convert to fraction form
385,420.46/577,987.05 = 132,630.26/x - Step 3: Cross multiply
385,420.46x = 577,987.05 × 132,630.26 - Step 4: Simplify right side
385,420.46x = 76,658,572,718.13 - Step 5: Solve for x
x = 76,658,572,718.13/385,420.46 - Step 6: Final answer
x = 198,895.96
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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.