Finding the Fourth Proportional to 230,373.21, 317,918.21 and 128,395.83
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Solution
The fourth proportional to 230,373.21, 317,918.21 and 128,395.83 is: 177,188.02
Step by Step Solution
- Step 1: Write the proportion equation
230,373.21 : 317,918.21 = 128,395.83 : x - Step 2: Convert to fraction form
230,373.21/317,918.21 = 128,395.83/x - Step 3: Cross multiply
230,373.21x = 317,918.21 × 128,395.83 - Step 4: Simplify right side
230,373.21x = 40,819,372,766.05 - Step 5: Solve for x
x = 40,819,372,766.05/230,373.21 - Step 6: Final answer
x = 177,188.02
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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.