Finding the Fourth Proportional to 229,290.07, 316,420.29 and 128,688.07
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Solution
The fourth proportional to 229,290.07, 316,420.29 and 128,688.07 is: 177,589.53
Step by Step Solution
- Step 1: Write the proportion equation
229,290.07 : 316,420.29 = 128,688.07 : x - Step 2: Convert to fraction form
229,290.07/316,420.29 = 128,688.07/x - Step 3: Cross multiply
229,290.07x = 316,420.29 × 128,688.07 - Step 4: Simplify right side
229,290.07x = 40,719,514,203.40 - Step 5: Solve for x
x = 40,719,514,203.40/229,290.07 - Step 6: Final answer
x = 177,589.53
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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.