Finding the Fourth Proportional to 438,959.20, 658,438.80 and 106,535.20
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Solution
The fourth proportional to 438,959.20, 658,438.80 and 106,535.20 is: 159,802.80
Step by Step Solution
- Step 1: Write the proportion equation
438,959.20 : 658,438.80 = 106,535.20 : x - Step 2: Convert to fraction form
438,959.20/658,438.80 = 106,535.20/x - Step 3: Cross multiply
438,959.20x = 658,438.80 × 106,535.20 - Step 4: Simplify right side
438,959.20x = 70,146,909,245.76 - Step 5: Solve for x
x = 70,146,909,245.76/438,959.20 - Step 6: Final answer
x = 159,802.80
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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.