Finding the Fourth Proportional to 312,994.73, 469,486.87 and 99,759.74
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Solution
The fourth proportional to 312,994.73, 469,486.87 and 99,759.74 is: 149,637.94
Step by Step Solution
- Step 1: Write the proportion equation
312,994.73 : 469,486.87 = 99,759.74 : x - Step 2: Convert to fraction form
312,994.73/469,486.87 = 99,759.74/x - Step 3: Cross multiply
312,994.73x = 469,486.87 × 99,759.74 - Step 4: Simplify right side
312,994.73x = 46,835,885,487.78 - Step 5: Solve for x
x = 46,835,885,487.78/312,994.73 - Step 6: Final answer
x = 149,637.94
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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.