Finding the Fourth Proportional to 384,415.80, 576,564.36 and 128,252.90
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Solution
The fourth proportional to 384,415.80, 576,564.36 and 128,252.90 is: 192,359.55
Step by Step Solution
- Step 1: Write the proportion equation
384,415.80 : 576,564.36 = 128,252.90 : x - Step 2: Convert to fraction form
384,415.80/576,564.36 = 128,252.90/x - Step 3: Cross multiply
384,415.80x = 576,564.36 × 128,252.90 - Step 4: Simplify right side
384,415.80x = 73,946,051,206.64 - Step 5: Solve for x
x = 73,946,051,206.64/384,415.80 - Step 6: Final answer
x = 192,359.55
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1.5x scale
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.