Finding the Fourth Proportional to 230,373.34, 317,918.39 and 128,395.96
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Solution
The fourth proportional to 230,373.34, 317,918.39 and 128,395.96 is: 177,188.19
Step by Step Solution
- Step 1: Write the proportion equation
230,373.34 : 317,918.39 = 128,395.96 : x - Step 2: Convert to fraction form
230,373.34/317,918.39 = 128,395.96/x - Step 3: Cross multiply
230,373.34x = 317,918.39 × 128,395.96 - Step 4: Simplify right side
230,373.34x = 40,819,434,654.13 - Step 5: Solve for x
x = 40,819,434,654.13/230,373.34 - Step 6: Final answer
x = 177,188.19
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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.