Finding the Fourth Proportional to 439,980.09, 659,972.57 and 159,490.05
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Solution
The fourth proportional to 439,980.09, 659,972.57 and 159,490.05 is: 239,235.96
Step by Step Solution
- Step 1: Write the proportion equation
439,980.09 : 659,972.57 = 159,490.05 : x - Step 2: Convert to fraction form
439,980.09/659,972.57 = 159,490.05/x - Step 3: Cross multiply
439,980.09x = 659,972.57 × 159,490.05 - Step 4: Simplify right side
439,980.09x = 105,259,057,390.48 - Step 5: Solve for x
x = 105,259,057,390.48/439,980.09 - Step 6: Final answer
x = 239,235.96
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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.