Finding the Fourth Proportional to 387,056.76, 534,137.94 and 217,291.20
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Solution
The fourth proportional to 387,056.76, 534,137.94 and 217,291.20 is: 299,861.64
Step by Step Solution
- Step 1: Write the proportion equation
387,056.76 : 534,137.94 = 217,291.20 : x - Step 2: Convert to fraction form
387,056.76/534,137.94 = 217,291.20/x - Step 3: Cross multiply
387,056.76x = 534,137.94 × 217,291.20 - Step 4: Simplify right side
387,056.76x = 116,063,473,948.13 - Step 5: Solve for x
x = 116,063,473,948.13/387,056.76 - Step 6: Final answer
x = 299,861.64
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.