Finding the Fourth Proportional to 210,954.51, 291,117.21 and 115,461.20
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Solution
The fourth proportional to 210,954.51, 291,117.21 and 115,461.20 is: 159,336.45
Step by Step Solution
- Step 1: Write the proportion equation
210,954.51 : 291,117.21 = 115,461.20 : x - Step 2: Convert to fraction form
210,954.51/291,117.21 = 115,461.20/x - Step 3: Cross multiply
210,954.51x = 291,117.21 × 115,461.20 - Step 4: Simplify right side
210,954.51x = 33,612,742,407.25 - Step 5: Solve for x
x = 33,612,742,407.25/210,954.51 - Step 6: Final answer
x = 159,336.45
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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.