Finding the Fourth Proportional to 313,107.21, 432,128.63 and 175,338.59
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Solution
The fourth proportional to 313,107.21, 432,128.63 and 175,338.59 is: 241,990.03
Step by Step Solution
- Step 1: Write the proportion equation
313,107.21 : 432,128.63 = 175,338.59 : x - Step 2: Convert to fraction form
313,107.21/432,128.63 = 175,338.59/x - Step 3: Cross multiply
313,107.21x = 432,128.63 × 175,338.59 - Step 4: Simplify right side
313,107.21x = 75,768,823,814.79 - Step 5: Solve for x
x = 75,768,823,814.79/313,107.21 - Step 6: Final answer
x = 241,990.03
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1.5x scale
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.