Finding the Fourth Proportional to 387,623.10, 581,434.65 and 121,465.20
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Solution
The fourth proportional to 387,623.10, 581,434.65 and 121,465.20 is: 182,197.80
Step by Step Solution
- Step 1: Write the proportion equation
387,623.10 : 581,434.65 = 121,465.20 : x - Step 2: Convert to fraction form
387,623.10/581,434.65 = 121,465.20/x - Step 3: Cross multiply
387,623.10x = 581,434.65 × 121,465.20 - Step 4: Simplify right side
387,623.10x = 70,624,076,049.18 - Step 5: Solve for x
x = 70,624,076,049.18/387,623.10 - Step 6: Final answer
x = 182,197.80
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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.