Finding the Fourth Proportional to 420,984.98, 580,959.84 and 239,696.99
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Solution
The fourth proportional to 420,984.98, 580,959.84 and 239,696.99 is: 330,782.17
Step by Step Solution
- Step 1: Write the proportion equation
420,984.98 : 580,959.84 = 239,696.99 : x - Step 2: Convert to fraction form
420,984.98/580,959.84 = 239,696.99/x - Step 3: Cross multiply
420,984.98x = 580,959.84 × 239,696.99 - Step 4: Simplify right side
420,984.98x = 139,254,325,131.55 - Step 5: Solve for x
x = 139,254,325,131.55/420,984.98 - Step 6: Final answer
x = 330,782.17
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.