Finding the Fourth Proportional to 485,386.12, 728,029.97 and 130,354.01
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Solution
The fourth proportional to 485,386.12, 728,029.97 and 130,354.01 is: 195,517.79
Step by Step Solution
- Step 1: Write the proportion equation
485,386.12 : 728,029.97 = 130,354.01 : x - Step 2: Convert to fraction form
485,386.12/728,029.97 = 130,354.01/x - Step 3: Cross multiply
485,386.12x = 728,029.97 × 130,354.01 - Step 4: Simplify right side
485,386.12x = 94,901,621,697.76 - Step 5: Solve for x
x = 94,901,621,697.76/485,386.12 - Step 6: Final answer
x = 195,517.79
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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.