Finding the Fourth Proportional to 323,918.99, 485,907.64 and 87,256.43
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Solution
The fourth proportional to 323,918.99, 485,907.64 and 87,256.43 is: 130,892.50
Step by Step Solution
- Step 1: Write the proportion equation
323,918.99 : 485,907.64 = 87,256.43 : x - Step 2: Convert to fraction form
323,918.99/485,907.64 = 87,256.43/x - Step 3: Cross multiply
323,918.99x = 485,907.64 × 87,256.43 - Step 4: Simplify right side
323,918.99x = 42,398,565,976.13 - Step 5: Solve for x
x = 42,398,565,976.13/323,918.99 - Step 6: Final answer
x = 130,892.50
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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.