Finding the Fourth Proportional to 268,946.54, 403,418.58 and 128,278.70
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Solution
The fourth proportional to 268,946.54, 403,418.58 and 128,278.70 is: 192,417.46
Step by Step Solution
- Step 1: Write the proportion equation
268,946.54 : 403,418.58 = 128,278.70 : x - Step 2: Convert to fraction form
268,946.54/403,418.58 = 128,278.70/x - Step 3: Cross multiply
268,946.54x = 403,418.58 × 128,278.70 - Step 4: Simplify right side
268,946.54x = 51,750,010,998.25 - Step 5: Solve for x
x = 51,750,010,998.25/268,946.54 - Step 6: Final answer
x = 192,417.46
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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.