Finding the Fourth Proportional to 230,938.13, 318,676.44 and 128,955.62
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Solution
The fourth proportional to 230,938.13, 318,676.44 and 128,955.62 is: 177,948.61
Step by Step Solution
- Step 1: Write the proportion equation
230,938.13 : 318,676.44 = 128,955.62 : x - Step 2: Convert to fraction form
230,938.13/318,676.44 = 128,955.62/x - Step 3: Cross multiply
230,938.13x = 318,676.44 × 128,955.62 - Step 4: Simplify right side
230,938.13x = 41,095,119,179.87 - Step 5: Solve for x
x = 41,095,119,179.87/230,938.13 - Step 6: Final answer
x = 177,948.61
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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.